Offline Image Compressor & Resizer
Compress and resize JPEG, PNG, and WebP images client-side to reduce file sizes by up to 80% without losing visual fidelity or uploading photos to cloud services. Runs 100% inside your browser RAM.
Drop an image to compress locally (JPG, PNG, WebP)
100% processed locally in your browser — zero server uploads
Mask Client PII Before Pasting into ChatGPT
Two-way client-side token anonymization and 1-click restore.
⚙️ How This Tool Works Locally
When you use this tool on PrivacyKit, every byte is processed directly in your device RAM.
- 1. No Network Traffic: No HTTP POST or PUT requests are made to any server. Your internet can even be disconnected.
- 2. Modern Native APIs: Computation uses native HTML5 Canvas, Web Cryptography (SubtleCrypto), and client-side binary parsers.
- 3. Zero Footprint: Closing this browser tab immediately frees the memory buffer. No persistent cookies or caches remain.
💡 Frequently Asked Questions
How does the image compressor work without a server?
It loads your image into browser RAM, renders it to an HTML5 Canvas at your chosen dimensions and quality setting, and exports a compressed Blob directly to your device.
More Privacy Tools You May Need
Live Temp Email & OTP Inbox
Generate disposable email addresses & receive verification codes (OTP) in real-time
AI Prompt Anonymizer & Restorer
Mask names, companies, [brackets] & amounts before AI, restore with 1 click
Private QR Code Generator & Scanner
Generate static, permanent QR codes with zero tracking and no expiration