Everyday tools that never see your files
UsefulCrate is a collection of 45 free browser-based utilities for images, text and code. Every tool runs entirely in your browser, so files and text are never uploaded to a server — no accounts, no queues, no waiting for a round trip.
- File
- Type
- Size
- Last modified
0 network requests carried it anywhere. It was read in this tab. Don't take our word for it — open the Network tab and drop it again.
Image
Image Compressor
Shrink JPG, PNG and WebP files with adjustable quality.
Image Converter
Convert between WebP, JPEG and PNG, in batches.
Image Resizer
Scale images to a maximum width and height, in batches.
Watermark Remover
Paint over it, and AI fills the hole from the surrounding texture.
Image Color Picker
Pick any pixel's colour, or see the image's main palette.
Image Cropper
Drag a box, crop, download — the photo never leaves your machine.
Document
PDF to Word
Rebuild a PDF's text and pictures as an editable Word document.
Word to PDF
Save a .docx as a PDF with real, selectable text.
JPG to PDF
Merge pictures into one PDF, in the order you choose.
PDF Compressor
Type the size you need; the tool finds the quality that fits.
Text
Word & Character Counter
Live word, character, sentence and reading-time counts.
Text Cleaner
Deduplicate, trim and sort lines of text.
Case Converter
camelCase, snake_case, kebab-case and five more, at once.
Slug Generator
Turn a title into a clean, SEO-friendly URL slug.
Find & Replace
Bulk find & replace with case, whole-word and regex options.
Fancy Text Generator
13 Unicode styles, live as you type, copy with one click.
Text Diff
Paste two versions, see every added and removed line.
Markdown to HTML
Paste Markdown, get clean HTML and a live preview.
Word Frequency Counter
See which words dominate your text, ranked and counted.
Reverse Text
Flip it by characters, by words or by lines.
Developer
JSON Formatter & Validator
Format, validate and minify JSON with clear error messages.
Base64 Encoder & Decoder
Encode and decode text as Base64, UTF-8 safe.
URL Encoder & Decoder
Percent-encode or decode URLs and query strings.
JWT Decoder
Read a JWT's header and payload, with readable expiry.
Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 digests.
UUID Generator
Generate random v4 UUIDs, one or hundreds at a time.
Unix Timestamp Converter
Convert Unix timestamps to dates and back, both directions.
CSV to JSON Converter
Turn CSV, TSV or delimited data into JSON.
JSON to CSV
Paste a JSON array, get spreadsheet-ready CSV.
URL Parser
Paste a URL, see every part of it laid out.
Regex Tester
Write a pattern, see every match highlighted as you type.
Number Base Converter
Type in any base, read it out in all the others.
HTML Entities
Escape text for HTML, or decode entities back to text.
Cron Explainer
What does that cron string actually mean — and when does it fire next?
Image to Base64
Turn an image into a self-contained data URI.
Calculators
Percentage Calculator
All four percentage sums, solved as you type.
Age Calculator
Exact age in years, months and days — at any date.
Date Difference
Days between dates, or a date plus or minus N days.
Unit Converter
Metric to imperial and back, in four categories.
Loan Calculator
What a loan really costs, before you sign.
BMI Calculator
One number, instantly, without an account.
Utility
Password Generator
Strong random passwords, generated and shown locally only.
Colour Converter
Convert HEX, RGB and HSL values with a live preview.
Lorem Ipsum Generator
Placeholder text by paragraph, sentence or word count.
Random Picker
Paste a list, draw N winners — or shuffle everything.
Why locally matters
The usual alternative is a website that asks you to upload your file first. That is a copy of your document on somebody else's machine, under terms you probably have not read. Here there is no upload step to trust, because there is no upload code at all. Everything below is plain JavaScript running in this tab:
- Private by construction. Not by promise — there is no code path that sends your file anywhere.
- Fast. No upload, no queue, no download wait. The limit is your own machine.
- Works offline. Once the page has loaded, the tools keep working even if your connection drops.
- No account. No sign-up, no email address, no password.
Questions
Are my files really not uploaded?
Correct. Every tool is plain JavaScript running in your browser tab. There is no upload endpoint, no background job and no queue. Open your browser's developer tools, switch to the Network tab, and use any tool — you will not see a request carrying your file.
Is there a cost or a file limit?
No cost and no account. There is no limit imposed by us, because nothing is sent to us. The practical limit is your own machine's memory.
How is the site paid for?
By advertising. Ads are served by third-party networks and use cookies, which the Privacy Policy describes in full. Blocking advertising cookies does not affect any of the tools.
Can I request a tool that is not here?
Yes — the contact page explains how. Tools that can run entirely in the browser are the ones we can build.