Free online developer toolkit · 200+ tools
19Dev
19Dev is our free, browser-side developer toolkit. 200+ tools for JSON, SQL, regex, base64, image, color, generators, hash, encoding, and more — no signup, no upload, fully private.
About 19Dev
We built 19Dev because developers shouldn't have to pay $19/month for the basics. Every tool runs locally in your browser, your data never leaves your machine, and we add new tools every month.
19Dev is built, operated and supported by Experts InfoTech (Pvt) Ltd — a Pakistani software house with 20+ years of experience. The same engineering team that built 19Dev also runs your support, your upgrades, and your customisations.
Visit the dedicated 19Dev website
Free online developer toolkit · 200+ tools. The full product walkthrough, technical specs, pricing and customer stories live on the dedicated site.
Go to 19dev.com →Opens in a new tab. https://19dev.com
What 19Dev does
JSON
Formatter, validator, schema, diff, minify, to CSV/TSV/YAML/CSV, tree view.
Encoding
Base64, URL, HTML entities, JWT, hex, binary, ASCII.
Hash & crypto
MD5, SHA-1, SHA-256, SHA-512, bcrypt, HMAC.
Regex
Tester, visual builder, common patterns library.
Text
Diff, case converter, line sorter, dedupe, word/char count.
Color
Picker, contrast checker, palette generator, gradient builder.
Image
Compressor, resizer, format converter, base64 round-trip, EXIF viewer.
Generators
UUID, password, Lorem Ipsum, QR code, fake data.
Ready to try 19Dev?
The fastest way to see if 19Dev fits your needs is a 20-minute demo on the dedicated site. No commitment, no card.