Free · No sign-up · Runs in your browser

File tools that never see your files.

Resize passport photos, compress images, format JSON and more. Everything runs on your device, so your files are never uploaded to a server.

No uploadsNo accountOpen to inspection

Drop a file here

Photos, PDFs, text or JSON. You can also paste from your clipboard.

Or try a tool:
Quick Presets · One-Click WorkflowsClick any preset—or drop a file directly onto it—to process your file immediately. You can save your own presets inside any tool.
All tools

Pick a tool. Add a file. Download.

Every tool works the same way, so once you have used one you know them all.

How it works

Three steps, and none of them upload anything.

STEP 1

Add a file

Drop it on the page, choose it from your computer, or paste text. It opens inside this browser tab.

STEP 2

Adjust the settings

See a live preview as you change size, quality or format. Basic settings first, Advanced when you want control.

STEP 3

Download the result

Check the before and after, then save the file. Delete it from the tab with one click when you are done.

Why your files stay private

Each tool runs inside your browser tab, using your own computer. Our servers only send you the page. They never receive your file, because there is nowhere in the page to send it. While a tool works you will see a paper envelope close over your file. That is our way of showing that it stays sealed in your tab.

Your browser tabyour fileOur serversnever receiveyour files
Check it yourself

Do not take our word for it.

Process something above, then look at these numbers. They are measured in this tab.

0

Network requests while processing

Counted from the browser's own request log around every run. It should stay at zero.

Hashing…

Fingerprint of this page's code

A live SHA-256 digest of the runtime code executing in this tab, verified alongside our WebAssembly module hashes.

connect-src 'self'

Blocked by the site's own rules

Enforced by a strict Content-Security-Policy header that blocks the page from contacting any external server.

Try it: open your browser's developer tools, switch to the Network tab, then process a file. You will see no upload. You can also switch off your internet connection first. The tool still works.
For developers and AI agents

The same tools, callable by code.

Every tool is described by one manifest. The page builds its settings from it, and AI agents (Claude, ChatGPT, Cursor) call the same tool through the Model Context Protocol. The same input always gives the same output, whether a person clicked or an agent called.

MCPJSON schemaSame result as the website
TECHNICAL SPECIFICATION & USER GUIDE · IMAGES & MEDIA
How Compresseur d'Images Côté Client Works Locally in Your Browser
Available in:EnglishالعربيةDeutschEspañolFrançaisहिन्दीBahasa IndonesiaItaliano日本語한국어NederlandsPolskiPortuguêsРусскийTürkçeTiếng Việt简体中文
Direct Answer Summary (Optimized for Search & AI Citations)
Le compresseur d'images de PrivacyFold exécute MozJPEG et WebP directement en WebAssembly dans le navigateur. Il allège vos fichiers jusqu'à 85% avec un ciblage précis en kilo-octets et un traitement 100% hors-ligne.
Technical Privacy Guarantee:Your file is processed 100% locally in your browser memory and is never uploaded. This page contains advertisements served by Google AdSense to sustain free operation without accounts or subscriptions.
Share Privately:(0 trackers · plain links)
La plupart des services de compression en ligne obligent à transmettre vos photographies et documents confidentiels à des serveurs tiers. PrivacyFold embarque directement les encodeurs industriels MozJPEG, Google WebP et libpng compilés en WebAssembly dans votre navigateur. Vous pouvez réduire le poids de vos clichés jusqu'à 85% avec un ciblage précis en kilo-octets, sans aucun envoi vers un serveur.
Step-by-Step Instructions
  1. Importez ou déposez vos images (JPG, PNG ou WebP).
  2. Réglez le curseur de qualité ou indiquez un plafond précis en Ko (ex. moins de 200 Ko).
  3. Observez le résultat et le gain d'espace en temps réel.
  4. Téléchargez immédiatement vos fichiers optimisés.
What to Expect & Performance Benchmarks
Jusqu'à 85% d'économie d'espace tout en préservant la netteté perçue.
Execution Latency: Traitement moyen de 120 ms par photo sur un ordinateur classique.
Supported Limits: Prend en charge JPG, PNG, WebP et AVIF jusqu'à 100 Mo.
Privacy Verification & Technical Guarantee
L'encodage s'opère exclusivement dans le bac à sable mémoire de l'instance WebAssembly locale.
  1. Ouvrez l'onglet Réseau des outils de développement (F12).
  2. Lancez la compression.
  3. Vérifiez l'absence totale de requêtes réseau sortantes.
Application statique vérifiable et exécution transparente sans backend.
Architecture & Standards Comparison
AttributePrivacyFold Local EngineTraditional Online Converters
Execution Runtimeimage-compress-v1.wasm (In-Browser RAM)Remote Cloud Server Buckets
Standard ComplianceW3C WebAssembly / MozJPEGOpaque Server Scripts
Network Footprint0 KB uploaded (Client-Side Only)Full File Upload Over Internet
Offline Support100% Functional via Service Worker PWAFails Without Active Server Connection
Agent IntegrationDeterministic JSON-RPC / MCP Tool SchemaAd-Hoc REST Upload Form
Frequently Asked Questions
Mes photos sont-elles téléchargées sur un serveur distant ?
Non. Tout le calcul de compression s'effectue dans la mémoire RAM de votre navigateur via WebAssembly. Vos données ne quittent jamais votre machine.
Puis-je viser une taille exacte (par exemple moins de 200 Ko pour un formulaire) ?
Oui. L'outil calcule automatiquement le meilleur compromis de compression pour respecter rigoureusement le plafond en kilo-octets que vous indiquez.