Every tool you need, right here.
Free browser-based tools for developers and designers - JSON utilities, image converters, PDF tools and more. No installs, no accounts, no limits.
JSON Tools
30 tools for formatting, validating, converting and inspecting JSON.
JSON Formatter
Pretty-print JSON with custom indentation.
JSON Validator
Check JSON syntax and get precise error locations.
JSON Diff / Compare
Compare two JSON documents side by side.
JSON → CSV
Turn a JSON array into a CSV file.
JSON → TypeScript
Generate TypeScript interfaces from JSON.
JSON Schema Generator
Infer a JSON Schema from sample data.
JWT Decoder
Decode a JWT's header and payload.
JSON Repair
Fix common JSON mistakes automatically.
Image Converter
118 conversion pairs - JPG, PNG, WebP, AVIF, SVG, ICO, PDF and more.
PDF Tools
30 tools - merge, split, compress, protect, watermark and more.
PDF to JPG
Convert every PDF page into a JPG image.
JPG to PDF
Combine one or more JPG images into a single PDF.
Merge PDF
Combine multiple PDF files into one document.
Split PDF
Split a PDF into individual pages or custom ranges.
PDF Compressor
Reduce PDF file size by re-encoding embedded content.
Protect PDF
Add a password to prevent unauthorised access.
PDF to Text
Extract all plain text from a PDF file.
Rotate PDF
Rotate individual pages or the whole PDF.
PDF Metadata Viewer
Inspect title, author, dates, and other metadata.
Video Tools
20 tools - compress, cut, convert, resize, crop, merge, GIFs and frames.
Video Compressor
Reduce video file size with quality, resolution, and format controls.
Video Cutter
Cut a precise section from a video using start and end times.
Video Converter
Convert videos between MP4, WebM, MOV, and MKV with quality controls.
MP4 to MP3
Extract MP3 audio from MP4 and other video files.
Video to GIF
Convert a short video section to an animated GIF.
Video Thumbnail Generator
Capture a PNG or JPG thumbnail from any timestamp.
Video Resizer
Resize video dimensions with aspect-ratio locking and presets.
Remove Audio from Video
Create a silent video by removing the audio track.
Audio Tools
20 tools - convert, cut, compress, merge, boost volume and record audio.
MP3 Converter
Convert any audio file to MP3 with selectable bitrate.
Audio Converter
Convert between MP3, WAV, OGG, FLAC, M4A, AAC and more.
MP4 to MP3
Extract the audio track from an MP4 video and save it as MP3.
MP3 Cutter
Cut an MP3 file - select start and end points and save the section.
Audio Cutter
Cut audio files in any supported format by selecting a range.
MP3 Compressor
Reduce MP3 file size by re-encoding at a lower bitrate.
MP3 Merger
Merge multiple MP3 files into one seamless audio file.
Audio Joiner
Join multiple audio files of any format into a single output.
MP3 to WAV
Convert MP3 audio to uncompressed WAV format.
WAV to MP3
Convert WAV audio to compressed MP3 with bitrate control.
M4A to MP3
Convert M4A (Apple audio) files to widely compatible MP3.
MP3 Volume Booster
Increase the volume of an MP3 file with gain control.
QR & Barcode Tools
12 tools - generate, scan and decode QR codes, barcodes, UPC, EAN, Code 128 and more.
QR Code Generator
Generate QR codes for URLs, text, WiFi, email, phone, vCard, and more.
QR Code Generator with Logo
Generate QR codes with a custom or social logo overlay for URLs, text, WiFi and more.
QR Code Scanner
Scan QR codes using your device camera in real time.
QR Code Decoder
Upload a QR code image and decode its content instantly.
WiFi QR Code Generator
Create a QR code your guests can scan to join your WiFi network.
Barcode Generator
Generate barcodes in CODE128, CODE39, EAN-13, UPC, ITF-14 and more.
Barcode Generator with Logo
Generate Code 128, EAN-13, EAN-8, UPC-A or Code 39 barcodes with a custom or social logo overlay.
Barcode Scanner
Scan barcodes live using your device camera.
Barcode Decoder
Upload a barcode image and decode its value automatically.
UPC Barcode Generator
Generate valid UPC-A barcodes with automatic check digit calculation.
EAN Barcode Generator
Generate EAN-13 (and EAN-8) barcodes with correct check digit validation.
Code 128 Generator
Generate Code 128 barcodes supporting full ASCII text.
Finance Calculators
40 free calculators - loans, margins, savings, debt, ROI, taxes and more.
Loan Payment Calculator
Calculate monthly loan payments for any principal, interest rate, and loan term.
Profit Margin Calculator
Calculate gross, operating, or net profit margin as a percentage of revenue.
Savings Calculator
Project how your savings grow with regular contributions and compound interest over time.
ROI Calculator
Calculate return on investment (ROI) percentage and net gain for any investment.
Debt Snowball Calculator
Use the debt snowball method - pay smallest balances first to build momentum.
Credit Card Payoff Calculator
Find out how long it takes to pay off your credit card balance and total interest paid.
Hourly to Salary Calculator
Convert an hourly wage to annual, monthly, bi-weekly, and weekly salary equivalents.
Sales Tax Calculator
Add or remove sales tax from any price and find the pre-tax or post-tax amount.
Blog
Practical guides on JSON, images, PDFs and developer productivity.
10 Online Tools That Save Developers Hours Every Week
The right tools eliminate tedious manual work. Here are 10 browser-based tools that developers reach for every day.
JPG to WebP Migration: A Step-by-Step Guide for Websites
Migrating from JPG to WebP is one of the highest-impact performance improvements available. Here's how to do it systematically.
Free PDF Tools vs Adobe Acrobat: An Honest Comparison
Adobe Acrobat costs hundreds per year. Here's an honest look at what free browser-based tools can and genuinely cannot do.
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