Practical browser tools. No account. No upload for the tools that run on your device.
Small, single-purpose tools for PDFs, images, spreadsheets, subtitles and text. Each one says what it does, what it cannot do, and whether it touches the network.
Search needs JavaScript. The complete catalogue — 27 tools — is listed below, grouped by category.
A place to start
One tool from each part of the catalogue, so you can see the range. An editorial pick, not a ranking — nothing on this site is measured, so there is no usage data to rank by.
PDF Toolkit
Merge, split, rotate, watermark and convert PDF files entirely in your browser.
Image Converter & Compressor
Convert between PNG, JPEG and WebP and shrink file size in your browser.
Subtitle Toolkit
Convert, retime and clean SRT and VTT subtitle files in your browser.
CSV Cleaner
Tidy delimiters, headers, duplicates and encodings in spreadsheet exports.
QR & Barcode Toolkit
Generate QR codes and Code 128 barcodes without a server round trip.
Syntax converters
JSON to YAML is my favorite of the bunch
Why ToolAcre works this way
The work happens in your tab
File tools decode, transform and re-encode using your browser’s own pipeline, usually inside a Web Worker. There is no upload step, which also means the size limit is your device’s memory rather than somebody’s upload cap.
No account, ever
There is nothing to sign up for, so there is no email list, no "create an account to download", and nothing to delete afterwards.
Limitations are part of the product
Every tool documents what it cannot do, on its own page, before you spend time on it. Where a capability is missing on purpose, the reason is written down rather than left as a gap.
No third-party scripts in this build
Advertising and analytics are switched off across the whole site, and no external script, font or tag is loaded on any page. A strict Content Security Policy is what enforces that rather than a promise.
How your data is treated
- File tools decode, transform and re-encode your files in the browser. Nothing is uploaded to a server, and you can verify it in your browser’s network panel.
- There is no account system, so there is nothing to sign up for and nothing to delete.
- Advertising and analytics are switched off across the entire site, and no third-party script, font or tag is loaded on any page.
- Each tool states plainly, on its own page, what it does and does not send anywhere.
- 2 tools — Direct Media Downloader and YouTube Thumbnail Downloader & Metadata Viewer — do make network requests, because contacting a named host is part of what they are for. Each announces every request before making it, and the registry records it.
Every tool
The complete catalogue, grouped by category. Nothing is hidden behind the search box.
Documents
Page-level work on files you already have: combining them, pulling pages out, stamping them, or producing a document you can send to a client. Nothing is uploaded — the PDF is read and rewritten in the tab.
PDF Toolkit
Merge, split, rotate, watermark and convert PDF files entirely in your browser.
Freelance Invoice Tool
Build and export a clean freelance invoice or quotation as a PDF, in your own country's labels and currency, with data kept on your device.
Images & photos
Editing, converting and cleaning up pictures. The browser decodes and re-encodes the file on your device, which also means the size limit is your own memory rather than an upload cap.
Browser Image & Drawing Editor
Crop, adjust, annotate and draw on images without uploading them anywhere.
Image Converter & Compressor
Convert between PNG, JPEG and WebP and shrink file size in your browser.
Image Metadata Privacy Tool
Inspect and strip EXIF, GPS and other metadata before you share a photo.
Social Image Resizer
Resize and crop images to the aspect ratios social platforms expect.
Video & subtitles
Working with media files and the caption tracks that go with them. Two tools here reach the network by design, and each says which host it contacts before it contacts it.
Direct Media Downloader
Download a media file from a direct link, straight to your device, with the URL checked before anything is contacted.
Subtitle Toolkit
Convert, retime and clean SRT and VTT subtitle files in your browser.
YouTube Thumbnail Downloader & Metadata Viewer
Pull every thumbnail size and the public title, channel and embed details for a YouTube link.
Data & spreadsheets
Tabular and numeric work: repairing an export that will not open cleanly, and modelling figures you type yourself. No market data is fetched and no file is sent anywhere.
DCF Calculator
Educational discounted cash flow model driven entirely by your own assumptions.
CSV Cleaner
Tidy delimiters, headers, duplicates and encodings in spreadsheet exports.
Text & everyday tools
Small jobs that are awkward everywhere else — reshaping a block of text, counting it, or turning a link into something scannable.
QR & Barcode Toolkit
Generate QR codes and Code 128 barcodes without a server round trip.
Text Toolkit
Case conversion, diffing, counting, escaping and whitespace cleanup for text.
Developer tools
The utilities you reach for mid-task: converting between formats, decoding a value, or working out a permission bit or a cron field. All of them are panels inside one product, so switching between them costs no page load.
JSON formatter & validator
Pretty-print with the indent you want, or get the exact line and column where a document stops being valid.
Syntax converters
JSON to YAML is my favorite of the bunch
Base64 encoder & decoder
Round-trips UTF-8 correctly, so accents, CJK and emoji come back exactly as they went in.
URL encoder & decoder
Percent-encode a single query value or a whole address, with the encodeURI and encodeURIComponent difference spelled out.
HTML entity escaper
Turn markup into text you can paste anywhere. Decoded with a lookup table rather than the HTML parser, so your input stays data.
Unix timestamp converter
Read an epoch value in seconds or milliseconds, in UTC and your local zone, with the unit always stated rather than guessed.
UUID generator
Identifiers from the browser’s cryptographically secure generator — never Math.random() — plus a check that a given string is well formed.
SHA hash calculator
SHA-1, SHA-256, SHA-384 and SHA-512, computed by the browser’s own Web Crypto implementation.
Text comparison
Spot what changed between two versions line by line, with case and whitespace differences optionally ignored.
JWT decoder
Inspect the header and payload of a token. Decode only: the signature is never verified, so nothing shown here proves a token is genuine.
HTML WYSIWYG editor
Perfect for web devs
Chmod calculator
Simplify Chmod permissions with this cheatsheet
Docker run to Docker compose converter
To save Docker run parameters as config files
Crontab generator
The be-all-and-end-all tool for Cron automation
Questions and limitations
Are my files uploaded?
Not by the file tools. PDFs, images, spreadsheets, subtitles and text are read, processed and written back inside your browser, and you can watch your network panel stay quiet while you work. Two tools in the catalogue do use the network by design; they are named in the privacy section above and on their own pages.
Do I need an account?
No. There is no account system anywhere on this site.
Is there a file size limit?
There is no server limit, because there is no server. The real limit is your device’s memory, and it is lower on a phone than on a laptop. Each tool states its own cap where it has one — the CSV cleaner, for example, stops at 50 MB.
Why can this site not compress a PDF?
Because the technique a browser can use rasterises every page, which destroys the selectable text and often makes a text document larger. Rather than ship that behind a friendly button, the PDF Toolkit leaves it out and the guide explains what to do instead.
Can it convert HEIC photos from my iPhone?
No. Browsers have no dependable way to decode HEIC, so those files are rejected with a clear message instead of being half-handled. Convert on the phone or on your computer first; there is a guide for it.
Is anything saved between visits?
Almost nothing. Most tools keep nothing at all, so reloading discards your work by design. The invoice tool is the exception: it keeps what you entered in your browser’s local storage until you clear it, and says so.
Is this finished?
The tools work. The site is not deployed to its own domain yet, and the legal documents are drafts that have not been reviewed by a lawyer. Both facts are stated on the pages they apply to rather than left for you to discover.