GGenApps

Free online tools that run entirely in your browser

Calculators, image tools, PDF tools and generators — no sign-up, no file uploads to a server, no watermarks. Your files never leave your device.

Try: Image to 50 KB Passport Photo EMI Calculator QR Generator Typing Test
33 working tools 100% client-side processing 0 files uploaded Free — no sign-up, ever

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Why people use GenApps

Most tool websites upload your files to their servers, queue them, and sometimes keep copies. GenApps is built differently: every tool runs with JavaScript directly in your browser. Your passport photo, your PDF and your invoice data never leave your device — which is why the tools are instant, work on slow connections, and stay free.

The collection focuses on jobs people actually search for: compressing a photo to the exact kilobyte limit an application form demands (FPSC and PPSC want ≤30 KB, NADRA ≤50 KB), making a correctly sized passport photo at home, working out a loan EMI before visiting a bank, generating a GST-ready invoice, or checking a typing speed before a government job test.

Frequently asked questions

Are these tools really free?
Yes — every tool is free with no sign-up, no watermark and no daily limit. The site is supported by advertising, which is why we can keep file processing free.
Are my files uploaded anywhere?
No. Image compression, PDF merging, photo making and everything else happens locally in your browser. You can even disconnect from the internet after the page loads and the tools still work.
How accurate are the calculators?
They use the standard published formulas (reducing-balance EMI, compound interest, Naegele’s rule for due dates, Mifflin–St Jeor for calories) and show results to two decimals. They are planning estimates — for loans, taxes and health decisions, confirm final figures with your bank, tax authority or doctor.
Can I use these tools on my phone?
Yes. Every tool is mobile-first and works in any modern phone browser — useful when a form deadline hits and you only have your phone.

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JSON Formatter & Validator — free online

Format, minify and validate JSON with clear error locations. This JSON Formatter & Validator is completely free on GenApps: no sign-up, no watermark and no usage limit, and it runs 100% in your browser, so anything you enter stays on your device.

Open the JSON Formatter & Validator ↑ · Browse all 33 free tools · All tools list

How to use the json formatter & validator

  1. Type or paste your input into the box above.
  2. The result updates instantly as you type in most text tools — no button to press.
  3. Use the copy button to take the output exactly as shown.
  4. Your text never leaves your device, so it is safe for drafts and snippets.

About this tool

Formats (“beautifies”) JSON with clean indentation, minifies it back to one line, and validates it — if the JSON is broken, the error message tells you the exact position of the problem.

Also shows quick stats: size, and counts of objects, arrays, keys and values. Everything runs locally — safe for API responses and config files.

Frequently asked questions

What does “Unexpected token” mean?
Usually a missing comma, an unquoted key, or a trailing comma. The position number in the error points near the mistake.
Is my JSON sent to a server?
No — parsing uses your browser's built-in JSON engine.
Can it format huge JSON?
Yes, up to your device's memory. Files around a few MB are fine.

Private by design

GenApps tools process everything locally in your web browser using JavaScript. Your files, photos and text are never uploaded to a server — close the tab and everything is gone. The only data our optional server features store is what you explicitly send us (a contact message, a tool rating or a newsletter email).

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