Image CompressorCompress JPG, PNG and WebP images in your browser by quality or to a target size such as 100 KB.
90+ free tools · no sign-up
Fast online tools that run privately in your browser
Compress images, merge PDFs, format JSON, create QR codes and much more — without uploading your files to a server.
- Files stay on your device
- No account needed
- Completely free
- Works on phone and desktop
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Essential tools
A hand-picked starting set covering the most common everyday tasks.
Image ResizerResize JPG, PNG and WebP images to exact pixel dimensions or a percentage, with optional aspect-ratio lock.
Image Converter (JPG, PNG, WebP)Convert images between JPG, PNG and WebP in bulk.
HEIC to JPG ConverterConvert HEIC and HEIF photos from an iPhone to JPG, PNG or WebP in your browser.
Background RemoverRemove the background from a photo in your browser.
Passport Photo MakerMake a passport or visa photo in your browser: crop to the right size, optionally make the background white, and print several on one sheet.
Merge PDFCombine several PDF files into one document in the order you choose.
Split PDFSplit a PDF into single pages, fixed-size chunks or custom page ranges.
Image to PDFConvert JPG, PNG and WebP images into a PDF, one image per page.
Sign PDFSign a PDF in your browser: draw, type or upload your signature, add text, a date or a tick, and download.
Add Watermark to PDFAdd a text or image watermark to a PDF in your browser.
Word CounterCount words, characters, sentences and paragraphs as you type, with reading and speaking time estimates.
Case ConverterConvert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more with one click.
JSON Formatter & ValidatorFormat, validate and beautify JSON with 2 or 4 spaces or tabs.
Meta Tag GeneratorGenerate clean HTML meta tags for a page: title, description, canonical, robots, Open Graph and Twitter Card tags, with length guidance.
SERP Snippet PreviewSee an approximate Google-style search result for your title, URL and description on desktop and mobile, with pixel-width estimates.
Caption FormatterTidy social media captions: keep blank lines that some apps collapse, trim extra spaces, move hashtags to the end and check the length.
Post Length CheckerPaste one post and check it against typical character limits for X, Threads, Bluesky, Mastodon, LinkedIn, Instagram, Facebook and YouTube at once.
QR Code GeneratorTurn any text into a static QR code.
Wi-Fi QR CodeCreate a QR code that connects phones to your Wi-Fi network.
QR Code ReaderDecode a QR code from a screenshot, photo or your device camera.
Invoice GeneratorMake a professional invoice in your browser: logo, line items, tax or VAT, discount, shipping, deposit.
Percentage CalculatorWork out a percentage of a number, what percent one number is of another, percentage change, and adding or subtracting a percentage — all on one page.
Date Difference CalculatorCount the days, weeks, months and years between two dates, including working days with a weekend you choose.
Unit ConverterConvert between metric and imperial units for length, mass, temperature, area, volume, speed, time, pressure and energy, with a table of every unit at once.
Password GeneratorGenerate strong random passwords with your choice of length and character sets, using your browser’s cryptographic random number generator.
File Type & Info CheckerFind out what a file really is.
Create ZIP FileCombine several files into one ZIP archive in your browser.
Browse by category
Image ToolsCompress, resize, convert, crop and inspect images privately in your browser.15 toolsPDF ToolsMerge, split, rotate, reorder and convert PDF files without uploading them.12 toolsText & Writing ToolsCount words, change case, clean text, compare drafts and preview Markdown.13 toolsDeveloper ToolsFormat JSON and XML, encode and decode data, test regex, decode JWTs and hash text.18 toolsSEO ToolsGenerate meta tags, robots.txt and sitemaps; preview snippets and check headings.13 toolsSocial Media ToolsFormat captions, organise hashtags, check post lengths and plan content.9 toolsQR Code ToolsCreate QR codes for text, links, Wi-Fi and contacts, or read a QR code from an image.5 toolsCalculators & ConvertersPercentages, discounts, dates, units, file sizes, download times and more.10 toolsSecurity & PrivacyGenerate strong passwords, estimate strength, hash text and verify file checksums.8 toolsFile UtilitiesInspect files, create ZIP archives, convert files to data URIs and verify checksums.8 tools
Latest additions
Added 28 October 2026
File to Data URIConvert an image, font or any small file into a Base64 data URI, with ready-to-paste CSS and HTML snippets and a size warning when inlining is a bad idea.
Open ZIP FileLook inside a ZIP archive and download individual files without installing anything.
Create ZIP FileCombine several files into one ZIP archive in your browser.
File Type & Info CheckerFind out what a file really is.
Text Encrypt / DecryptEncrypt a private note with a password using AES-256-GCM and PBKDF2, then decrypt it later on this page.
File Checksum (SHA-256)Calculate SHA-256, SHA-384, SHA-512 and SHA-1 checksums of a file in your browser and compare them with the hash published by the download site.
Password Strength CheckerCheck how strong a password is and why.
Password GeneratorGenerate strong random passwords with your choice of length and character sets, using your browser’s cryptographic random number generator.
Guides
Short, practical walkthroughs for common tasks.
How to compress images for the web without losing visible qualityA practical guide to choosing the right format, size and quality setting so your images load fast and still look sharp.How to merge PDF files privately, without uploading themCombine several PDFs into one in your browser, put pages in the right order, and keep confidential documents on your device.How to make a Wi-Fi QR code your guests can scanCreate a QR code that connects phones to your Wi-Fi network without typing the password, print it, and keep it secure.
Why QMO Tools Pro?
Private by defaultProcessing happens in your browser, so your files and text are not uploaded.
Fast and lightweightStatic pages, with heavy libraries loaded only when a tool needs them.
Available in 8 languagesEvery tool, guide and page is available in English, العربية, Français, Español, Deutsch, 日本語, 简体中文, 한국어.
Honest about limitsEach tool explains what it can and cannot do. No invented data.