ExactKB: Compress Photo to KB

Government portals, visa services, and job applications all enforce strict file limits: "Photo must be under 100 KB." Meanwhile, modern smartphone cameras capture photos between 3 MB and 10 MB.

ExactKB eliminates manual trial and error. It calculates the exact compression curve required to hit your target file size in bytes while preserving the highest possible pixel resolution and visual fidelity.

How It Works

Pick an Exact Target: Select standard presets (20 KB, 50 KB, 100 KB, 200 KB, 500 KB) or define a custom limit down to the exact kilobyte.

Deterministic Compression: The engine dynamically optimizes compression quality and dimensions to fit inside your target ceiling without unnecessary downscaling.

Byte-Accurate Verification: View the exact output size in bytes. If a file cannot hit the target without extreme distortion, ExactKB provides an honest alert alongside the closest viable threshold.

Built for Official Portals

Passport & Visa Systems: US DS-160, Schengen visas, Canadian PR, Indian e-Visa, and global immigration uploads.

Exams & Admissions: Civil service, university entrance, UPSC, SSC, NEET, and certification exam forms.

Employment & Identity: Resume/CV uploads, ID card scans, driver's licenses, and HR portals.

Email & Web Portals: Stay within strict attachment and web form size boundaries.

Lossless Sharing via Document Mode
Messaging apps aggressively re-compress standard photo attachments. ExactKB allows direct export to your device storage or sharing as an uncompressed document to ensure the recipient receives the exact byte-for-byte file.

Privacy-First Architecture

100% On-Device Processing: Images are processed locally using your phone’s CPU/GPU. No photos are ever uploaded to a remote server.

Complete Offline Utility: Operates without an active internet connection.

Automatic EXIF Scrubbing: Sensitive camera parameters, timestamps, and GPS coordinates are stripped by default to protect personal data.

Zero Friction: No account registration, email verification, or tracking SDKs.

Fully functional with minimal ads. Remove ads permanently via a single one-time purchase—no recurring subscriptions or locked feature tiers.

Recent changes:
Release notes for 1.0.0 :

First release of ExactKB.
• Compress a photo to 20, 50, 100, 200, 300, 500 KB or any custom limit
• Real byte count with a clear PASS or FAIL — never a surprise on the website
• Send on WhatsApp as a Document so the file isn't shrunk again
• Save to gallery, share to any app
• Everything runs on your phone — photos are never uploaded
• Camera and location metadata removed by default