EazyTools4u

28 tools · nothing to install · nothing uploaded

Free online tools that run inside your browser.

Formatters, converters and generators for developers — plus image tools, invoices, quotations and QR codes for everyone else. No signup, no upload, no limits.

Most usedJSON FormatterQR Code GeneratorBase64 Encode/DecodeImage Resizer & CompressorInvoice GeneratorPassword Generator
Files never leave your device — every tool runs client-sideNo account, no email, no paywallInstant — no upload wait, no queue

Every tool, on one page

All 28 tools — no hunting, no clicking through categories first.

Developer Tools

13
JSON FormatterFormat, validate & minifyXML FormatterBeautify, minify & validate XMLXML to JSONXML → JSON, attributes intactJSON to XMLJSON → XML, properly escapedBase64 Encode/DecodeText ⇄ Base64 in one pasteHash GeneratorMD5, SHA-256, SHA-3, BLAKE2UUID Generatorv4, v1, v7 — in bulkJWT Encoder/DecoderDecode, verify & sign HS256Timestamp ConverterUnix ⇄ human-readable dateURL Encode/DecodePercent-encode URLs & queriesColor ConverterHEX, RGB, HSL with live previewFile Diff CheckerCompare two files, IDE-styleLorem Ipsum GeneratorPlaceholder copy for mockups

Image Tools

3
Image ConverterJPG, PNG, WebP, AVIF — 15 at onceImage Resizer & CompressorBatch resize, download as ZIPImage to Base64 ConverterData URIs, both directions

Business Documents

2
Invoice GeneratorInvoice PDFs, saved in your browserQuotation GeneratorQuote now, convert to invoice later

Generators & Links

4
QR Code GeneratorLogos, colors, custom shapesPassword GeneratorStrong passwords, your rulesNoloBioLinkLink-in-bio page without an accountLink ShortenerFree short links, no signup

Text Tools

3
Word CounterWords, characters, reading timeCase ConvertercamelCase, snake_case, Title CaseText Diff CheckerHighlight exactly what changed

Calculators & Converters

3
Unit ConverterLength, weight, temperature, volumePercentage CalculatorIncrease, decrease, ratiosBMI CalculatorMetric or imperial, instantly
Browse category pages

Not just another dev-tool site

Four things people don’t expect to find here — and the reason they come back.

NoloBioLink

A link-in-bio page for Instagram or TikTok — live in 30 seconds, with no email, no password and no account. A 6-digit code is the only key.

Create a page

Invoices & Quotations

Fill in a form, download a clean PDF. Up to 10 documents stay saved in your browser, and any quotation converts into an invoice in one click.

Make an invoice

QR Code Generator

Not the grey default square — drop in your logo, set brand colours and corner styles, then export at print resolution.

Design a QR code
4.2 MB180 KB

Batch image toolkit

Convert, resize and compress up to 15 images at a time between JPG, PNG, WebP, AVIF and ICO — processed on your machine, out as a ZIP.

Open image tools

Why these run in the browser

Your data stays yours

Invoices, images and tokens are processed by JavaScript on your own machine. There is no server to leak them, because nothing is sent to one.

No upload, no wait

Fifteen images resize as fast as your laptop can do it — not as fast as your connection can upload them.

Nothing to sign up for

No account, no trial, no “3 free exports left”. Bookmark the tool you need and it works the same next year.

Guides

Short, practical write-ups from the tools themselves.

All guides →
Business · 9 minHow to Write an Invoice as a Freelancer (Step-by-Step + Checklist)Security · 8 minSHA-256 vs MD5: Which Hash Should You Use?Images · 7 minConvert PNG to WebP for Faster Websites (Practical Guide)