Precision utilities. Engineered for scale.
Eight powerful tools for every project and professional workflow — all browser-based, privately processed, and permanently free.
Eight tools for everyone
Browser-based, private, and built for real workflows — from quick tasks to professional pipelines.
Text Comparison Tool
The most private diff tool on the web
Compare two documents, code snippets, or data files with character-level precision — entirely in your browser. The intelligent diff engine highlights every addition, deletion, and modification with color-coded overlays. Used daily by developers for code review, lawyers for contract revisions, and editors for proofreading.
Common use cases
- Review pull request diffs without uploading code to a third party
- Compare two versions of a legal contract before signing
- Proofread content edits — see exactly what changed between drafts
- Audit configuration files for accidental changes
File Size Reducer
Compress up to 80% — quality stays
Reduce PDF, image, and document file sizes using adaptive compression algorithms that analyse each file type and apply optimal settings automatically. No fixed quality presets — the engine targets the best size/quality balance for your specific file. Ideal before emailing, uploading to a portal, or archiving.
Common use cases
- Reduce a scanned PDF from 15 MB to under 2 MB for email
- Optimise product photos for fast page loads without visible loss
- Compress Word documents before submitting to an online portal
- Batch-reduce a folder of images for storage savings
PDF Merge & Split
Full page-level control over your PDFs
Merge multiple PDF files into a single ordered document, or split a large PDF into precise page ranges. Drag-and-drop reordering lets you set the exact page sequence before merging. Extract just the pages you need from a 200-page report. Maintain vector quality throughout — no re-rendering, no resolution loss.
Common use cases
- Consolidate monthly reports into a single annual document
- Extract one chapter from a large ebook or manual
- Merge scanned receipts into one file for expense reporting
- Split a large form pack into individual client files
QR Code Generator
Custom QR codes with brand identity
Generate fully customised QR codes for any URL, plain text, WiFi credentials, or contact card. Embed your logo, set brand colours, choose error-correction level, and export high-resolution PNG or crisp SVG. QR codes never expire — there is no server to go down because the code itself encodes all the data.
Common use cases
- Add QR codes to business cards that link to your portfolio
- Print WiFi credentials on a card for guests — no password sharing
- Put a QR code on product packaging to link to a how-to video
- Generate event ticket QR codes for check-ins
OCR Text Extractor
AI text recognition across 13 languages
Extract editable, searchable text from any image, screenshot, or scanned document using an advanced AI recognition engine. Handles printed text with near-perfect accuracy and has strong support for handwriting. Processes multi-page PDFs page by page. Outputs clean, formatted text ready for editing or search indexing.
Common use cases
- Extract text from a scanned contract so you can search and edit it
- Digitise lecture notes from a whiteboard photo
- Convert a printed form into editable data without retyping
- Pull product information from a photo of a receipt or label
AI Background Remover
Professional-grade cutouts in one click
Remove backgrounds automatically using industrial-grade AI edge detection that distinguishes subjects from complex backgrounds — hair, fur, and fine edges included. Produces clean transparent PNGs immediately. No manual masking, no Photoshop required. Outputs are ready for product listings, presentations, or composite designs.
Common use cases
- Create clean product images for an e-commerce listing
- Make profile photos with a transparent or custom background
- Prepare assets for a presentation without a photo editor
- Design marketing banners by compositing subjects onto new backgrounds
Barcode & QR Scanner
Decode any code — camera or image upload
Decode barcodes and QR codes directly from your browser using the device camera in real time or by uploading an image file. Supports every major format used in retail, logistics, and events. No app to install, no hardware needed beyond a phone or webcam. Decoded results can be copied, exported, or followed as a link.
Common use cases
- Look up a product from its barcode while shopping
- Scan event tickets for check-ins from any browser
- Decode a QR code from a screenshot without a phone
- Verify a printed barcode reads correctly before going to print
JSON Validator & Power Tool
Real-time validation with smart auto-repair
Validate, format, and query JSON data in real-time with a smart engine that detects syntax errors and offers auto-repair suggestions. Run JSONPath queries to extract nested values, validate against a schema, and format output with configurable indentation. Everything stays in your browser — no data leaves your device.
Common use cases
- Debug a malformed API response without copying it into Postman
- Format minified JSON from a production log for human reading
- Validate a config file against a schema before deploying
- Extract specific nested fields from a large JSON payload instantly
Enterprise-Grade Security
Advanced server-side processing with industry-standard encryption. Files are automatically and permanently deleted immediately after processing
No Sign-up Required
Immediate access to premium engineering tools. No credit cards, no emails, just professional utilities at your fingertips
Open & Transparent
Our algorithms are designed for clarity and precision. We believe in providing technical depth alongside simplicity
Engineering Guides
In-depth technical resources for modern engineering
QR Code Anatomy: Finder Patterns & Error Correction
Dive deep into the fascinating structure of QR codes. Learn how finder patterns enable rapid detection, timing patterns correct distortion, and Reed-Solomon error correction makes codes resilient to damage.
Diff Algorithms: Myers vs Hunt-McIlroy vs Patience
Explore the algorithms behind version control and text comparison. Learn how Myers, Hunt-McIlroy, and Patience diff algorithms work, their trade-offs, and when to use each approach.
How Barcode Scanners Work: Laser, CCD, and Camera
Explore the technology behind barcode scanners. Learn how laser, CCD, and camera-based scanners decode barcodes using optics, sensors, and signal processing. Discover which technology is best for your needs.