Product Updates
Changelog & Releases
Stay up to date with the latest features, platform optimizations, and security improvements for our offline image compressor.
Version 3.9.4
Latest ReleaseOctober 4, 2026Introduced offline license keys and instant guest mode.
Offline License Keys
- •Activate FastCompressor Pro with a simple license key across up to 3 personal machines — no account required.
- •Easily move your license between computers with one-click device deactivation.
Instant Guest Mode
- •Start compressing immediately without signing up — just download and go.
- •Upgrade to Pro anytime with a license key to unlock unlimited compression.
Version 3.9.3
October 1, 2026Fail-safe video overwrite protection, automatic file collision naming, and unified default output folders.
Fail-Safe Video & File Protection
- •Safe Video Overwrites: Compressing videos over existing files is now completely fail-safe. Original videos remain untouched until compression successfully completes.
- •Atomic File Swaps: All compression pipelines (video, image, PDF) now stage files in temporary buffers before atomic finalization to prevent corrupted outputs.
Smart Directory & Collision Handling
- •Automatic Collision Renaming:Saving compressed files to their source folder automatically appends "_compressed" so master files are never accidentally overwritten.
- •Unified Default Folder: Unspecified export destinations now consistently save to your Documents/FastCompressor folder across macOS and Windows.
Version 3.9.2
September 29, 2026Universal Bitmap (.bmp) image decoding and encoding engine, instant queue previews, and faster batch processing.
Universal Bitmap (.bmp) Support
- •Comprehensive BMP Compatibility: Full native support for standard and legacy Windows and OS/2 bitmaps across all color depths.
- •Modern Format Conversions: Seamlessly convert legacy bitmap assets into modern WebP, JPG, or PNG formats with zero quality loss.
Instant Previews & Faster Queue
- •Instant Queue Previews: Live thumbnails now render immediately for .bmp, .dib, and .rle files in your batch list.
- •High-Speed Inspection: Instant header reading avoids unnecessary memory consumption when loading large bitmap collections.
Version 3.9.1
September 28, 2026Restored free tier allowances, safer in-place file replacement, and refined desktop interface controls.
Restored Free Features & Quotas
- •Restored 20 Daily Compressions: Free users can compress up to 20 files daily with no batch queue size limits.
- •All Formats & 4K Video: Full export support for AVIF, HEIC, RAW, TIFF, and up to 4K video exports.
- •Camera EXIF & Custom Presets: Restored full photo metadata retention controls, target file size targets, and folder watch mode.
File Safety & Desktop Polish
- •Safe In-Place Replacement: Improved overwrite safety ensures original files are cleanly replaced without duplicates or temporary clutter.
- •Floating New Batch Button: Convenient floating action button makes starting another batch fast and friction-free.
- •Window Header Polish: Balanced header spacing on macOS and Windows prevents window controls from overlapping navigation buttons.
Version 3.9.0
September 25, 2026Performance improvements, interface polish, and overall stability enhancements.
Performance & Engine Improvements
- •Faster Batch Processing: Optimized file handling routines deliver smoother, faster compression across single files and batch queues.
- •Enhanced Media Engine: Improved engine reliability for modern image and video formats, ensuring consistent export quality.
- •Privacy-First Exporting: Refined local export handling to ensure clean, private file sharing by default.
- •Reduced Memory Overhead: Streamlined background processes keep memory usage light and efficient during large tasks.
Interface Polish & Usability
- •Refined Native Dialogs:Upgraded in-app dialogs with clean, distraction-free cards that match your system's light or dark mode.
- •Seamless Web Integration: Smoother transitions between desktop features and official web services.
- •Real-Time Status Synchronization: Synchronized top-bar counters keep status indicators accurate and up to date.
- •Snappy Desktop Responsiveness: General bug fixes and stability tweaks ensure a noticeably faster, smoother desktop experience.
Version 3.8.0
September 23, 2026Safe in-place folder optimization, complete folder hierarchy mirroring, and crash-proof file safeguards.
Safe In-Place Compression
- •In-Place Folder Optimization: Optimize entire folders directly where they sit without moving them, seamlessly replacing original files.
- •Crash-Proof Safeguards: Files are safely encoded and verified before replacing originals, guaranteeing zero file loss if interrupted.
- •Overwrite Protection: Clear confirmation prompts warn you before replacing files and offer safe export to a separate folder.
Structure & Asset Integrity
- •Preserve Folder Structure: Retain nested subfolder hierarchies and original filenames so websites and project links never break.
- •Complete Folder Mirroring: Automatically mirrors empty folders and copies non-media files (docs, code, icons) for an identical project copy.
- •Smart Asset Protection: Media files that are already at optimal file size are preserved byte-for-byte to maintain peak quality.
Version 3.7.1
September 20, 2026Direct cloud file compression, automatic size protection, and accurate print colors.
Cloud Files & Colors
- •Cloud Storage Support: Compress files directly from iCloud, Google Drive, and OneDrive without manual downloads.
- •True Print Colors: Keeps CMYK and print color spaces vibrant and distortion-free.
Smart Compression
- •Guaranteed Smaller Files: Automatically adjusts compression so your output is always smaller than the original.
- •Clear Results: See exact space saved per file, with helpful tips when a file is already fully optimized.
Version 3.6.0
September 16, 2026Per-batch quality ratings, enhanced TIFF and PDF compression, file size expansion safeguards, and improved stability.
New Features & Enhancements
- •Batch Quality Ratings: Submit 1–5 star ratings immediately after completing compression batches to help fine-tune quality.
- •Feedback Tags & Notes: Quick issue category tags and expandable note inputs on lower ratings for fast issue reporting.
- •Rating Widget Toggle: Dedicated preference toggle in Settings > General to enable or disable the rating prompt.
Performance & Stability
- •Lossless TIFF & PDF Compression: Significantly smaller TIFF outputs with zero quality loss and smarter embedded image compression in PDFs.
- •Strict Size Safeguard: Guaranteed protection ensuring compressed files never exceed their original file size.
- •Dialog & Teardown Fixes: Replaced blocking dialogs with smooth modals and fixed edge-case listener issues during rapid screen transitions.
Version 3.5.0
September 4, 2026Enhanced batch cancellation handling, refined space savings calculations, and complete release history.
Stability & Transparency
- •Complete Release History: Added exact release dates across all historical changelog sections for seamless version auditing.
- •Cancellation Stability: Smooth memory cleanup and state handling when interrupting large multi-file batches.
Version 3.4.0
September 4, 2026Polished macOS installer, branded menu bar icon, clean percentage displays, and enhanced app stability.
New Features & Enhancements
- •Polished macOS Installer: Beautifully redesigned installer with a clean visual layout and quick drag-and-drop setup.
- •Mac Menu Bar Icon: Crisp, branded status icon in your macOS menu bar for instant recognition.
Performance & Stability
- •Clean Percentage Displays: Space savings and compression percentages are now cleanly rounded across all screens and widgets.
- •Enhanced Stability: Improved background reliability and fixed unexpected app closing issues.
Version 3.3.0
September 3, 2026Refined macOS setup experience, improved file navigation, and smoother completion interactions.
New Features & Enhancements
- •One-Click Folder Reveal: Easily open the destination folder directly from completed compression cards.
- •Refined macOS Setup: Faster and more reliable initial installer experience on Mac.
Performance & Stability
- •Smoother Card Interactions: Enhanced responsiveness when interacting with completed thumbnail cards.
Version 3.2.2
September 2, 2026Enhanced platform detection and seamless update delivery across all operating systems.
Updates & Improvements
- •Seamless Update Delivery: Enhanced platform detection to ensure smooth and accurate update checks across Windows, macOS, and Microsoft Store builds.
- •Improved Connection Reliability: Optimized background sync for account history and session analytics.
Version 3.2.1
September 1, 2026Support for massive 100MB+ images, high-resolution photo safety, and smart memory management during heavy batches.
New Features & Enhancements
- •Ultra-Large Image Support: Compress massive 100MB+ photos and ultra-high-resolution graphics smoothly without slowdowns or freezing.
Performance & Stability
- •Smart Memory Throttling: Adaptive queue handling prevents computer memory overload during large batch compressions.
- •Resolution Safeguards: Built-in safeguards for panoramic and high-megapixel images.
Version 3.1.4
August 31, 2026Fixes for PDF thumbnail generation and preview cards on Windows.
Bug Fixes & Improvements
- •PDF Thumbnail Fix: Resolved an issue where PDF previews and thumbnails were missing on some Windows systems.
- •Document Compression Stability: Smoother handling when loading multi-page PDF documents.
Version 3.1.3
August 31, 2026Progress bar stability for mixed batches, Windows preview fixes, and direct Microsoft Store update shortcuts.
Bug Fixes & Improvements
- •Smooth Batch Progress: Fixed progress bar jumping when compressing mixed batches of photos, videos, and PDFs.
- •Windows Previews & Comparisons: Fixed image previews and Before/After split sliders on Windows.
- •Microsoft Store Updates: Added a direct shortcut to check for updates when using the Microsoft Store version.
Version 3.1.2
August 31, 2026Floating Dropzone, Before/After visual comparison, built-in video trimmer, per-file settings, clipboard compression, target file size, and expanded format support.
New Features & Enhancements
- •Floating Dropzone & Menu Bar Access: Drag and drop files to the menu bar icon or floating widget to compress instantly without opening the main app.
- •Interactive Visual Comparison: Split slider to zoom, pan, and inspect side-by-side image and video quality before saving.
- •Built-in Video Trimmer: Clip start and end boundaries on videos before compressing to trim unnecessary footage.
- •Per-File Compression Settings: Adjust quality, dimensions, and format for individual files within a single batch.
- •Instant Clipboard Compression: Instantly compress copied images directly from your clipboard (
Cmd/Ctrl + Alt + C) and paste anywhere. - •Target File Size Optimization: Specify an exact target file size (e.g. 25MB for Slack or 10MB for email) with automatic quality calculations.
- •Expanded Format Support: Added compression support for PDF documents, Animated PNGs (APNG), macOS ICNS icons, and JPEG XL files.
- •Filename Templates & Metadata Privacy: Customize output names with flexible templates and easily strip camera, GPS, and author metadata.
Performance & Quality
- •Ultra-Fast Thumbnail Grid: Fluid scrolling and instant previews even when queuing thousands of files.
- •Insomnia Mode: Keeps your computer awake while processing large background compression queues.
- •Storage Analytics: Track your lifetime space saved, compression speed, and session history in a clean summary view.
Version 3.0.0
August 18, 2026Dedicated Mac builds for Apple Silicon and Intel, lower memory usage, and faster batch compression.
New Features & Enhancements
- •Smaller & Faster Mac Downloads: Added dedicated versions for Apple Silicon (M1/M2/M3/M4) and Intel Macs, cutting download sizes in half.
Performance & Stability
- •Faster Batch Compression: Optimized memory usage so large compression queues run smoothly without slowing down your computer.
- •Improved Reliability: Better handling of HEIC photos and enhanced performance during high-volume compression jobs.
Version 2.0.9
August 14, 2026Cloud file support, large image improvements, and format enhancements.
New Features & Enhancements
- •Cloud File Support: Detects OneDrive, Dropbox, and iCloud files to compress or skip them easily.
- •Large Image Protection: Safe compression for high-resolution images and TIFFs without crashes.
Bug Fixes & Improvements
- •Video & Cleanup Fixes: Improved video format recognition and automatic file cleanup.
Version 2.0.8
August 9, 2026Smarter optimization detection, better macOS compatibility, and improved error handling.
New Features & Enhancements
- •Smart Optimization Detection: Intelligently skips images and videos that are already well-compressed to prevent unnecessary quality loss.
- •Mac File Filtering: Hidden Mac system files (._ files) will no longer cause false errors.
Bug Fixes & Improvements
- •Better Corrupted File Handling:You'll now see clearer error messages when trying to compress corrupted JPEG files.
- •Robust Video Diagnostics: Improved video error reporting helps detect issues faster with clearer messages.
Version 2.0.7
August 8, 2026Bug fixes and improvements for metadata preservation and auto-updater stability.
Bug Fixes & Improvements
- •Keep Your Hidden Details: We now safely preserve your camera settings, location tags, and copyright info when compressing images.
- •Original Dates: Compressed files will now keep the exact date and time they were originally created.
- •Safer Defaults: These protections are turned on automatically so you never accidentally lose important details.
- •Video Info: Videos now properly retain their hidden descriptions and chapter markers.
- •Smoother Updates: Fixed a bug that sometimes prevented the app from updating cleanly in the background.
Version 2.0.6
July 27, 2026Bug fixes and improvements for a smoother compression workflow.
Bug Fixes & Improvements
- •General Fixes: Resolved minor bugs and optimized overall application performance.
Version 2.0.5
July 23, 2026Bug fixes and performance improvements featuring uncapped high-res image & video processing and smoother login.
Performance & Quality
- •Unlimited Image Compression: Removed pixel limits for ultra-high-res photos, RAW files, and large TIFFs.
- •Uncapped Video Sizes: Removed the 4GB limit for 4K videos and added smart low-disk space alerts.
Login Bug Fixes
- •Login Fixes: Improved sign-in reliability and resolved verification code errors.
Version 2.0.4
July 17, 2026Major update introducing Free Tier Video Compression and a complete redesign of the header UI.
Video Compression for All!
- •Free Tier Video Compression: Video compression is no longer locked exclusively behind the PRO plan! Free users can now enjoy the full suite of video compression tools within their standard daily file limit.
UI & UX Enhancements
- •Header & Stats:Redesigned header with a battery-style progress bar and a rotating stats pill. The "100% Private" badge is now hidden for a distraction-free PRO experience.
- •Workflow Improvements:Removed intrusive startup popups and added a quick "Report a Bug" button to the sidebar.
Version 2.0.3
July 15, 2026Fixes an issue with the upgrade popup appearing on startup for Free users.
Bug Fixes & Improvements
- •Startup Upgrade Popup: Fixed an issue where the Upgrade popup was appearing on startup even if Free users had daily compressions left.
Version 2.0.2
July 14, 2026Minor improvements to make saving your files more reliable.
Bug Fixes & Improvements
- •Smarter Saving: If your save folder gets deleted or moved, the app now asks you to pick a new one instead of failing. We also added a backup save folder so you never lose your work.
- •Accurate Stats: Fixed an issue where the file size reduction percentage was sometimes displaying incorrectly.
Version 2.0.1
July 11, 2026Drastically better WebP compression and more value for Free users with "Keep Original" support.
User Facing Updates
- •Better WebP Compression:Fixed an issue where WebP images weren't getting adequately compressed. WebP compression now uses advanced optimizations to ensure you get the smallest possible file size without losing quality.
- •"Keep Original" Now Free:The "Keep Original" output format is now available on the Free plan! You no longer need PRO to maintain your file's original format when compressing.
Version 2.0.0
July 1, 2026Introducing Automatic Folder Watch Mode and a powerful new Background Watcher Daemon for seamless automation.
Automatic Folder Watch Mode (Major Feature)
- •Seamless Automation:Introducing "Watch Mode"! You can now select a folder, and FastCompressor will run in the background, automatically compressing any new images or videos added to that folder instantly.
- •Activity Feed: Keep track of everything happening in your watched folders with a beautiful, real-time activity feed right inside the app.
Version 1.8.0
June 1, 2026Introduces seamless auto-updates, enhanced JPEG compression, and a refined user review experience.
App Updates & Quality
- •Auto-Updater Integration: Introduced full application update functionality, ensuring seamless delivery of the newest features and fixes directly within the app.
- •Improved JPEG Compression: Upgraded the core compression engine, delivering significantly higher visual quality for JPEG outputs without increasing file sizes.
Version 1.7.5
May 30, 2026Improves TIFF format compatibility with more robust error handling.
Bug Fixes & Improvements
- •Improved TIFF Compatibility: Added graceful error handling for TIFF files with unsupported non-standard color depths. Users will now see a helpful message instead of a generic failure.
Version 1.7.4
May 29, 2026A visual overhaul featuring a splash screen and UI animations.
UI & UX Enhancements
- •Output Folder Selection:Completely redesigned flow. Clicking "Compress All" without a destination now reveals a beautiful, glassmorphic popup guiding you to select a folder.
- •Queue Layout Fixes: Fixed a visual bug where extremely long file names would break the layout, guaranteeing perfect text truncation.
Version 1.7.3
May 28, 2026Refines the upgrade experience and improves offline reliability for startup notifications.
UX Improvements
- •Startup Notifications: Resolved issues with upgrade popups showing for Pro users, improved offline handling, and made prompts for Free users significantly less intrusive.
Version 1.7.2
May 27, 2026Introduces custom proxy configurations for users on strict corporate networks.
Network & Proxy Support
- •Corporate Firewalls:Added a new "Network Settings" section, allowing enterprise users to input custom Proxy URLs to seamlessly access features on strict corporate networks.
Version 1.7.1
May 26, 2026Delivers massive improvements to the file preview system for high-resolution images and videos.
Bug Fixes
- •Massive Image Previews: Fixed crashes when attempting to preview incredibly large image files (e.g. TIFFs).
- •Extended Format Previews: Broken images when viewing original TIFF, BMP, and HEIC files have been fully resolved.
- •Native Video Previews:Video files now intelligently open in your system's default media player for a smooth viewing experience.
Version 1.7.0
May 25, 2026Introducing our highly anticipated Video Compression Engine, major UI & Quality of Life improvements, and massive under-the-hood technical upgrades.
Brand New: Video Compression!
- •Smart Engine Downloading: Stays incredibly lightweight by only downloading the necessary video compression engines on first use.
- •Extensive Output Controls: Perfectly tailor outputs with Format (MP4, WebM), Codec (H264, H265/HEVC), Framerate, and audio stripping options.
- •PRO Exclusive: Due to significant processing power requirements, the full suite of video features is available exclusively to PRO members.
UI & Quality of Life Improvements
- •Stop Compression:Cancel active batch compressions midway using the new "Stop Compression" button.
- •Single Instance & Safety Checks: Intelligently prevents multiple app instances and warns you if closing during compression.
- •OTP Email Corrections: Easily edit your email address directly from the OTP verification screen if there is a typo.
- •Better Progress Tracking: Expanded compression progress popup that dynamically displays the active file name.
Performance & Bug Fixes
- •Under-the-Hood Optimizations: Massive underlying performance improvements for a smoother and faster application.
- •Bug Fixes: Resolved a rare negative percentage visual bug in the User Profile and eliminated errors when compressing massive, high-megapixel images.
Version 1.5.0
May 23, 2026Introduces secure, background over-the-air auto-updates and a dedicated settings hub to track downloads.
All Devices (All Platforms)
- •Background Auto-Updates: Keep your app secure and up-to-date. The app silently checks for updates, downloads packages, and prompts you to install them seamlessly.
- •Update Hub: View live download progress and trigger manual version checks directly inside the settings dashboard.
Version 1.4.0
May 22, 2026A beautiful user interface redesign featuring a cleaner, softer layout and polished preferences.
All Devices (All Platforms)
- •Visual Redesign: Experience a softer, cleaner user interface designed to maximize usability and aesthetic appeal.
- •Global Progress Overlay: A distraction-free full-screen indicator to track extensive batch compression processes.
- •Polished Settings: Enhanced tooltips and smarter control toggles for a highly intuitive workspace configuration.
Version 1.3.0
May 21, 2026Implements high-performance Apple photo support and optimized stability for panoramic image exports.
All Devices (All Platforms)
- •Pristine HEIC Conversion: Process HEIC and HEIF photos at significantly faster speeds while fully preserving original color profiles.
- •Out-of-the-Box HEIC Support: Convert HEIC files reliably on Windows and Linux without installing native HEVC extensions.
- •Memory Optimization: Prevent runtime crashes when handling very high-resolution photos or panoramic files in batches.
Version 1.2.0
May 20, 2026Adds compatibility for new image formats (AVIF, HEIF, TIFF), introduces a custom title bar, and improves app stability.
macOS Updates
- •Intel & Apple Silicon: Fully optimized to run natively at lightning speeds on both older and M-series Macs.
Windows & Linux
- •Optimized Installers: Reduced initial installer download sizes with improved packagers.
All Devices (All Platforms)
- •AVIF, HEIF, & TIFF: Added full compression and file conversion options alongside baseline JPEG, PNG, and WebP support.
- •Title Bar Redesign: Crafted a clean, bespoke window title bar to blend perfectly with native operating systems.
- •Improved Stability: Solved UI state glitches to prevent loss of track during batch compression queues.
Version 1.0.1
April 10, 2026Solves installer issues, optimizes download packages, and fixes login verification failures.
macOS
- •Installer Fixes: Resolved errors encountered during macOS installation.
- •Streamlined Downloads: Simplified downloads by offering a single, clean installation file.
Windows
- •Optimized Installers: Improved file compression for the Windows setup installer to reduce download times.
Linux
- •Better Compatibility: Improved app reliability across different Linux distributions.
All Devices (All Platforms)
- •Login Fix: Fixed an OTP verification failure issue.
- •Crash Reporting: Enabled background crash reporting to fix runtime crashes.
Version 1.0.0
July 14, 2025Launches the core offline image-compression app, featuring private batch processing, custom compression settings, and smart format recommendations.
Native Apps
- •All Platforms Launch: Released native installers for macOS, Windows, and Linux operating systems.
Launch Features (All Platforms)
- •100% Private: All compression happens locally on your computer—no images are uploaded to the cloud.
- •Batch Compression: Drag and drop multiple images at once to compress them in bulk.
- •Custom Options: Adjustable quality sliders, image resizing with locked aspect ratios, and format conversions (JPEG, PNG, WebP).
- •Smart Protections: Optionally skip conversions if the compressed file size would end up larger than the original.
- •Best Format Recommendation: Suggests the optimal export format to get the best space savings.
- •User Accounts: Clean registration and login via email verification codes.
Ready to experience FastCompressor?
Get the latest version featuring secure background updates, robust HEIC support, and a complete visual redesign.