Powerful browser-based tools that run entirely on your machine. No uploads. No servers. No data collection.
Best match for your query
On-device AI — models run in your browser
Ask questions about your PDFs, DOCX, and text files. AI runs entirely on your device.
Drop a PDF lease, NDA, or service agreement — get plain-English summary, risk flags, and questions to ask. No lawyer needed.
Upload your Costco PDF receipts and uncover deep spending insights — categories, trends, staple items, and monthly comparisons.
Drop family photos — on-device AI understands each image and writes heartwarming Anne of Green Gables-style captions. Export as PDF postcard or Ken Burns video.
Upload a PDF and listen to it read aloud using your browser's built-in TTS. Pick voice, speed, pitch. Export audio. Resume from where you left off.
Canvas API & WebAssembly image processing
Convert any image format to any other — HEIC, JPG, PNG, WebP, GIF, BMP, TIFF, AVIF. Auto-detects input and recommends best output.
Batch resize and compress images to WebP, AVIF, JPEG, or PNG. Scale by %, exact dimensions, or max width. Download all as ZIP.
AI-powered background removal in your browser. Manual brush erase/restore, feathered edges, transparent PNG or custom bg. Batch up to 5 images.
Annotate screenshots — arrows, boxes, text, blur, emoji. Screen capture API, layers panel, undo/redo up to 30 steps. Export PNG or SVG.
Create photo grid collages from 3 to 50 images. 9 layout templates, sort by color, custom gap/border/shape. Export as high-res PNG or JPG.
Convert MOV, MKV, AVI, WMV, FLV → MP4. Extract audio as MP3/WAV. Create optimised GIFs. Scale to 1080p/720p. Powered by FFmpeg WebAssembly — zero uploads.
Encryption, hashing, and sensitive data protection
Auto-detect and black out sensitive info — SINs, SSNs, emails, credit cards — in PDFs & images before sharing. Scrubs metadata too.
Generate cryptographically secure passwords, passphrases, and UUIDs entirely offline. Strength meter, history, and bulk export included.
Compute MD5, SHA-256, SHA-512, CRC32 hashes for any text or file. Verify checksums against known values. HMAC-SHA256 included.
Create AES-256 password-protected ZIP archives locally. Tree preview, password strength meter, compression level, and QR code for the password.
Scan folders for duplicate images (pHash) and documents (MD5). Similarity threshold slider, grid or list view. Export CSV report.
Code, data formats, and debugging utilities
Merge, split, rotate, compress, convert PDFs — all in your browser.
Live regex match highlighting, capture groups, replace mode, and a library of 20+ patterns. Drop a text file to test against real data.
Pretty-print, minify, and validate JSON or YAML. Convert between both formats. JSON Schema validator built in. No data leaves your browser.
Paste HTML/CSS → live iframe preview. Click-to-inspect elements, computed styles panel, box model overlay, Flexbox/Grid visualizer.
Encode text or files to Base64 and decode back. Supports URL-safe variant, data URLs, MIME line wrapping, and binary file download.
Finance, QR codes, barcodes, and creativity tools
Import bank statements, set budget goals per category, track savings, and get smart financial recommendations. No subscription needed.
Generate QR codes for URLs, WiFi, contacts, and more. Scan from webcam or image. Download as PNG or SVG.
Generate EAN-13, UPC-A, Code 128, QR and more. Scan barcodes from webcam or image. Export as PNG or SVG.
Generate contact cards, WiFi QRs, events, geo links and more. Logo overlay, custom colors, batch CSV import, webcam scan test.
Capture and search your clipboard entries locally. Pin favorites, edit before pasting, add tags, export as JSON or HTML. IndexedDB storage.
Convert typed text to 10 handwriting styles. Ink color, paper textures, authentic per-character variation. Signature mode. Export PNG or PDF.
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Yes — every tool on SilentCanoe runs entirely in your browser using JavaScript and WebAssembly. Your files are never uploaded to a server. There is no backend, no database, and no account required. Processing happens on your device only.
Most tools work fully offline after the first page load. Tools that use AI models (Anne Story Generator, Costco Analyser AI mode, Chat with Documents, Contract Reviewer, Background Remover) download the model once to your browser cache, then operate completely offline on subsequent uses.
All tools work in modern browsers — Chrome, Edge, Firefox, and Safari. Tools using on-device AI (WebGPU) require Chrome 113+ or Edge 113+ on desktop. The Background Remover uses WASM and works in all modern browsers. The Duplicate Finder's folder picker requires Chrome/Edge; Firefox/Safari fall back to multi-file drag-drop.
Tools are grouped into 5 categories: AI & Smart Tools (on-device AI for documents and audio), Images & Media (image processing, annotation, collages), Privacy & Security (encryption, hashing, redaction), Developer Tools (code, data formats, debugging), and Data & Productivity (finance, QR codes, barcodes, creativity).
There is no server-side limit because nothing is uploaded. The practical limit is your device's available RAM. Large PDFs (50+ MB) or batches of high-resolution images may slow down on low-memory devices.
1,000 free API calls per day. Convert images, process PDFs, redact documents, and more — all with a single API key.
const response = await fetch(
'https://api.silentcanoe.com/v1/images/convert',
{
method: 'POST',
headers: {
'X-API-Key': 'your_key_here',
'Content-Type': 'application/json'
},
body: JSON.stringify({
url: 'https://example.com/img.png',
format: 'webp',
quality: 85
})
}
);
const result = await response.json();
console.log(result.file_url);
Sub-500ms response times. Optimized for performance.
Files auto-delete after 24h. No data retention.
Batch operations, webhooks, custom limits.
No credit card required. 1,000 calls/day forever.
No subscriptions. No tracking. No hidden costs.
Files Processed
Active Users
Uptime
Data Stored
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