Nothing leaves your device
Every tool is plain JavaScript running in this tab. Your files and text are read by your own browser, processed in memory and discarded when you close the page.
90 tools · nothing uploaded
Everyday tools that never see your data.
Tooltrusty is a set of 90 text, image, developer, calculator and SEO tools that run entirely inside your browser. Your files and text are processed on your own device and discarded when you close the tab — there is no upload, no account and no queue.
- 90Tools across five categories
- 0Bytes of your content uploaded
- £0No account, no trial, no cap
No account, no queue, no limits
There is no sign-up wall, no daily cap and no waiting for a server to finish. Open a tool, use it, close the tab.
One page per tool, loading only its own code
Each tool ships only the code it needs, so a text tool never downloads image-processing logic. Pages load fast even on a phone.
Works offline once loaded
Because the logic is already in the page, most tools keep working if your connection drops — which is also the simplest proof that nothing is being uploaded.
Text & Writing Tools
Clean up, count, convert and reshape text without leaving your browser.
Case Converter
Switch text between UPPER, lower, Title, Sentence, camelCase and snake_case.
Duplicate Line Remover
Strip repeated lines from a list, with optional case and whitespace matching.
Text Diff Checker
Compare two blocks of text and highlight every added, removed and unchanged line.
Word & Character Counter
Count words, characters, sentences and paragraphs, with a reading-time estimate.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words for mockups and layouts.
Text-to-Slug Converter
Turn a headline into a clean, lowercase, hyphenated URL slug.
Reverse Text & Mirror Generator
Reverse characters, words or line order, or flip text into mirror writing.
Fancy Text Generator
Convert plain text into bold, italic, script, monospace and other Unicode styles.
Whitespace & Line-Break Formatter
Strip extra spaces, collapse blank lines, and convert between separators.
Text Sorter
Sort lines alphabetically, by length, numerically, or shuffle them randomly.
Image Tools
Thirty ways to compress, resize, crop, edit and convert images locally with the Canvas API.
Image Compressor
Shrink JPEG, PNG and WebP files with a live quality slider and size comparison.
Image Resizer & Cropper
Resize to exact dimensions or drag a crop selection, with aspect-ratio locking.
Image Format Converter
Convert between PNG, JPG and WebP without uploading anything.
Image & Base64 Converter
Encode an image as a Base64 data URI, or decode a data URI back to a file.
Image Colour Picker
Pick exact colours from any image and copy them as HEX, RGB or HSL.
Meme Generator
Add classic top and bottom captions to any image and download the result.
Image Watermark Adder
Stamp text or a logo onto an image, with position, opacity and tiling options.
Favicon Generator
Generate every favicon size a site needs, plus the HTML to link them.
SVG to PNG Converter
Rasterise SVG markup or files to PNG at any resolution you choose.
Image Metadata (EXIF) Viewer
Read the camera, date and GPS data hidden inside a photo — privately.
Image Rotator & Flipper
Rotate by 90°, 180° or any angle, and flip horizontally or vertically.
Grayscale & Black-and-White Converter
Convert to greyscale with four different methods, or to pure black and white.
Image Filter Editor
Adjust brightness, contrast, saturation, hue, blur and sepia with live sliders.
Image Pixelator & Mosaic Effect
Turn an image into blocks, either wholesale or as a mosaic art effect.
Image Sharpen Tool
Recover apparent detail with unsharp masking and an adjustable radius.
Duotone & Colour Overlay Generator
Map an image's tones onto two brand colours, or wash it with a single tint.
Privacy Blur Tool
Drag over faces, plates or personal data and blur, pixelate or black them out.
Circular Crop & Avatar Maker
Crop to a perfect circle with an adjustable ring, ready for a profile picture.
Rounded Corner Generator
Round an image's corners by any radius, with per-corner control and CSS output.
Image Border & Frame Adder
Add a solid, gradient or polaroid-style frame around an image.
Photo Grid Splitter
Cut one image into a 3×3 or custom grid for carousel and feed posts.
Image Collage Maker
Combine several images into a grid, strip or mosaic with adjustable spacing.
Image to PDF Converter
Combine images into a single PDF with page size, orientation and margins.
GIF Frame Extractor & Builder
Split an animated GIF into frames, or build one from a set of images.
Image to ASCII Art Converter
Turn a photo into text art, with adjustable width, character set and colour.
Sprite Sheet Generator
Pack images into one sheet and get the CSS background positions to match.
Placeholder Image Generator
Make blank sized images with dimension labels for mockups and testing.
Batch Image Renamer
Rename many images at once with a pattern, then download them as a ZIP.
Image DPI & Print Size Calculator
Convert between pixel dimensions, DPI and real-world print size.
Before/After Compare Slider Generator
Turn two images into a self-contained draggable comparison widget.
Developer Tools
Formatters, generators and testers for everyday front-end and back-end work.
JSON Formatter & Validator
Beautify, minify and validate JSON with precise error locations.
CSS Gradient Generator
Build linear, radial and conic gradients visually and copy the CSS.
CSS Box-Shadow Generator
Dial in offsets, blur, spread and colour with a live preview and layer stacking.
Regex Tester
Test regular expressions against sample text with live match highlighting.
HTML, CSS & JS Minifier
Strip comments and whitespace from HTML, CSS or JavaScript and see the saving.
Base64 Encoder & Decoder
Encode text to Base64 or decode it back, with full Unicode and URL-safe support.
UUID / GUID Generator
Generate cryptographically random v4 UUIDs, plus nil and timestamp-ordered variants.
QR Code Generator
Turn a link, text, Wi-Fi login or contact detail into a downloadable QR code.
Colour Palette Generator
Build harmonious palettes from a base colour, with contrast checks built in.
Markdown to HTML Previewer
Write Markdown and see the rendered HTML side by side, then copy either one.
Calculators
Practical calculators for age, passwords, typing speed, loans and screens.
Age Calculator
Work out an exact age in years, months, days, hours and minutes.
Password Strength & Crack-Time Calculator
Estimate how long a password would resist an offline guessing attack.
Typing Speed (WPM) Calculator
Measure words per minute and accuracy with a live, character-by-character test.
Loan-to-Value (LTV) Calculator
Work out LTV, deposit and equity, and see which lending band you fall into.
Screen Resolution & Aspect Ratio Calculator
Solve for a missing dimension, simplify a ratio and check common presets.
SEO Tools
Audit, preview and generate the on-page and technical pieces of SEO.
Meta Title & Description Length Checker
Check title and description length in characters and real pixel width.
SERP Snippet Preview Generator
See how your page will look in a Google result, on desktop and mobile.
Open Graph & Twitter Card Preview
Preview and generate the tags that control how links look when shared.
Meta Tag Analyzer
Scan pasted HTML for missing, duplicated or malformed meta tags.
Canonical Tag Checker
Validate a canonical tag and catch the mistakes that make it useless.
Robots Meta Tag Generator
Build noindex, nofollow and snippet-control directives without guessing syntax.
Favicon & Meta Tag Bundle Generator
Generate the complete head block: icons, theme colour, manifest and social tags.
hreflang Tag Generator
Build a correct, reciprocal hreflang set for multi-language or multi-region sites.
Keyword Density Checker
Measure how often each word and phrase appears, and flag over-optimisation.
Keyword Position Checker
Check whether your keyword appears in the title, H1, first paragraph and URL.
Readability Score Checker
Score text with Flesch, Gunning Fog, SMOG and Coleman-Liau, and find hard sentences.
Header Tag Structure Analyzer
Visualise your H1–H6 outline and catch skipped or duplicated heading levels.
Word Counter with SEO Benchmarks
Count words and compare against typical lengths for the page type you are writing.
Duplicate Content Checker
Compare two blocks of text and measure how much of them overlaps.
Image Alt Text Checker
Find images with missing, empty, duplicated or unhelpful alt attributes.
Keyword-in-URL / Slug Checker
Check a URL for length, depth, readability and keyword placement.
XML Sitemap Generator
Turn a list of URLs into a valid sitemap.xml, with a sitemap index for large sites.
Robots.txt Generator
Build a robots.txt with sensible rules and no accidental site-wide block.
Robots.txt Validator & Tester
Paste a robots.txt and test whether specific URLs are allowed or blocked.
Schema Markup (JSON-LD) Generator
Build valid JSON-LD for Article, Product, FAQ, HowTo, LocalBusiness and more.
Structured Data Validator
Extract and check the JSON-LD on a page against required properties.
.htaccess Redirect Generator
Build 301 redirect rules for Apache, Nginx or a redirects file.
Minify HTML, CSS & JS for Page Speed
Minify assets and see the transfer saving after gzip, with Core Web Vitals context.
URL Slug Generator & Cleaner
Clean messy URLs into short, readable slugs, one at a time or in bulk.
UTM Campaign URL Builder
Build consistent tracked campaign URLs and keep your analytics tidy.
Internal Link Anchor Text Analyzer
Find generic anchors like “click here” and see your internal link distribution.
Backlink Disavow File Generator
Format domains and URLs into a valid Google disavow.txt file.
Social Media Character Counter
Count against every platform's real limit at once, with URL and emoji handling.
Rich Link Preview Tester
Extract the sharing tags from your HTML and preview the card each platform builds.
QR Code Generator for Print Campaigns
Generate a print-ready QR code with UTM tracking and a size calculator.
SEO-Friendly Filename Renamer
Clean image filenames into descriptive, hyphenated, lower-case names.
Title Tag Pixel Width Simulator
Measure title width in pixels against a live Google-style result box.
Content-to-Code Ratio Checker
Measure how much of your page is visible text versus markup and script.
Broken Anchor Text Finder
Find links with no href, no text, or fragments pointing at missing IDs.
On-Page SEO Audit Generator
Score a page against 30 on-page checks and link straight to the tool that fixes each one.
What “runs in your browser” actually means
Most free online utilities are thin front ends for a server. You choose a file, the browser uploads it, a program somewhere else does the work, and you download the result. That model is fine for some jobs and completely unsuitable for others — a signed contract, a screenshot of an internal dashboard, an API response containing a customer record, an unpublished draft.
Every tool on this site takes the other approach. The code that does the work is delivered to your browser along with the page, and it runs there. Text you paste stays in a JavaScript variable. Images are decoded and re-encoded using the HTML Canvas API on your own device. Nothing is written to a server, because there is no server-side component to write to.
You do not have to take that on trust. Load any tool, turn off your internet connection, and keep using it — it will carry on working, because everything it needs is already in the page. Open your browser's network inspector while you use it and you will see no outbound request carrying your content.
Built to be genuinely fast
Each tool lives on its own page and loads only the code that tool requires. The case converter does not download image-processing logic; the image compressor does not carry a Markdown parser. There is one small shared stylesheet, one small shared script for navigation and clipboard handling, and then a few dozen lines specific to the tool you opened. On a mid-range phone on a slow connection, that is the difference between a page that works and one you abandon.