[ UTILITY HUB ]
Small tools, no signup
Free web utilities that run in your browser. Nothing leaves your device.
The Utility Hub collects the small, single-purpose tools we reach for ourselves: working out GST on an invoice, checking an EMI before signing a loan, turning a link into a QR code for a poster, comparing two versions of a config file, shrinking an image so it clears an upload limit. Each one does a single job, opens instantly and asks for nothing in return.
Most of these tools do their work with JavaScript running inside your own browser tab. That has a practical consequence beyond privacy: there is no upload wait, no queue and no size cap imposed by a server, so a job that would normally involve a round trip finishes in about the time it takes to read the result. It also means the tools keep working on a poor connection once the page has loaded.
Every tool on this page is live and usable today. Each one has its own page explaining the formula or the process behind it, the assumptions it makes, and the cases where it is the wrong tool for the job.
PDF Tools
2 liveImage Tools
1 liveAI Tools
2 liveQR & Barcode
1 liveFile Conversion
2 liveCalculators
2 liveDeveloper Tools
29 liveText Diff
Compare two text files side-by-side with line-level diff highlights.
Base64 Encoder & Decoder
Encode or decode Base64 text, files, and images instantly in your browser.
CSS Beautifier
Beautify or minify CSS instantly in your browser.
CSV to JSON Converter
Convert CSV to a JSON array of objects, with correct handling of quoted fields and embedded commas.
Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes instantly in your browser.
HTML Beautifier
Beautify or minify HTML with a live rendered preview, entirely in your browser.
JavaScript Beautifier
Beautify or minify JavaScript with syntax highlighting, entirely in your browser.
JSON Diff
Compare two JSON documents structurally and see exactly what was added, removed, or changed, entirely in your browser.
JSON Formatter & Validator
Format, beautify, and validate JSON instantly in your browser.
JSON Minifier
Minify JSON to its smallest valid form instantly in your browser.
JSON Path Tester
Test a JSONPath-style query against JSON and see the matching values instantly.
JSON Repair
Fix common JSON mistakes like trailing commas and single quotes, with every change clearly shown before you use it.
JSON Schema Validator
Validate JSON against a JSON Schema and get detailed error messages, entirely in your browser.
JSON to CSV Converter
Convert a JSON array of objects to CSV, with correct quoting for commas, quotes, and newlines.
JSON to JavaScript Object Converter
Convert JSON into a JavaScript object literal you can paste directly into code.
JSON to Python Converter
Convert JSON into a Python dict/list literal, with true/false/null correctly mapped to True/False/None.
JSON to TypeScript Interface Generator
Generate TypeScript interfaces from JSON, including nested objects and arrays.
JSON Validator
Validate JSON and get the exact line and column of any syntax error, entirely in your browser.
JSON ↔ YAML Converter
Convert JSON to YAML or YAML to JSON instantly, formatting preserved, entirely in your browser.
JSON ↔ XML Converter
Convert JSON to XML or XML to JSON instantly, entirely in your browser.
JWT Decoder
Decode a JWT to see its header, payload, algorithm, and expiry instantly in your browser.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text as paragraphs, sentences, or words, with plain, HTML, or Markdown output.
Password Generator
Generate strong random passwords with adjustable length and character sets, plus a live strength meter and entropy indicator.
Regex Tester
Test regular expressions with live match highlighting, flag toggles, and a plain-language breakdown of your pattern.
SQL Formatter
Beautify SQL queries across common dialects instantly in your browser.
Unix Timestamp Converter
Convert between Unix timestamps, milliseconds, and human-readable dates across timezones, with a live updating clock.
URL Encoder & Decoder
Encode or decode URLs and query strings instantly, UTF-8 safe, entirely in your browser.
UUID Generator
Generate v1 or v4 UUIDs instantly, individually or in bulk, entirely in your browser.
XML ↔ XSD Converter
Generate an XSD schema from an XML sample, or a sample XML document from an XSD schema.
How we build these tools
A tool earns a place here when it replaces something tedious: a spreadsheet formula you re-derive every quarter, a desktop app you open twice a year, or a search result that wants your email before it will show a number.
We keep the interface to the inputs that change the answer, show the working where a formula is involved, and avoid dark patterns — no watermark on the free tier, no export counter, no “sign up to download”.
Bugs and wrong numbers matter more than features. If a calculation here disagrees with your accountant or your bank, tell us and we will either fix it or document the assumption.
Privacy in plain terms
The browser-based tools never transmit your file or your figures. An image you compress, a document you mark up, a salary you type into a calculator — all of it stays in the tab and disappears when you close it.
We do not run accounts on these tools, so there is no profile to attach usage to. Site-wide analytics and advertising are described in our privacy policy and cookie policy, and the terms of use set out what we do and do not guarantee.
Utility Hub FAQ
Are these tools really free?
Yes. Every utility listed here is free to use with no account, no trial and no export limit. Advertising on the site covers hosting costs.
Do my files get uploaded to a server?
For the browser-based tools — image compression, background removal, text diff, QR generation and the calculators — processing happens on your device and the file never leaves it. Tools that link out to a separate Nesake site follow that site's own stated policy.
Do I need to install anything?
No. Each tool is a web page. It works in Chrome, Safari, Firefox and Edge on desktop and mobile, and there is nothing to update.
Is there a file size limit?
There is no server-side limit because there is no server step. The practical ceiling is your device's memory — very large images or PDFs are slower on an older phone than on a laptop.
Can I use the output commercially?
Yes. The files you create are yours. Nesake claims no rights over anything you compress, convert, calculate or generate.
How do I request a tool?
Send the request through our contact page. We prioritise tools that solve a specific, repeated task rather than broad all-in-one suites.
Want the full catalogue? Browse all Nesake apps · Games · Blog · Request a tool