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ToolStash

Free Text Tools

Count, convert, format and compare text in your browser. Nothing is uploaded, so confidential drafts and source code stay private.

1 tool ready to use, 7 more planned.

Text tools are the clearest case for doing the work in the browser. Counting words or reformatting JSON needs no server at all — the browser can do it in a fraction of a millisecond. Sites that upload your text anyway are taking a copy of it for no technical reason.

Everything here runs locally, which makes these tools usable for the material you would not normally paste into a random website: unpublished writing, client copy, internal documents, API responses with real keys in them.

Text Tools you can use now

Planned

Scheduled, not yet built. Nothing here links anywhere — no dead ends.

Coming soon

Case Converter

Switch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase and snake_case.

Coming soon

JSON Formatter & Validator

Pretty-print or minify JSON and get the exact line and column of any syntax error.

Coming soon

Lorem Ipsum Generator

Generate placeholder paragraphs, sentences, words or list items on demand.

Coming soon

Text Diff Checker

Compare two blocks of text side by side with additions and deletions highlighted.

Coming soon

Markdown to HTML

Write Markdown on the left, get clean HTML and a live preview on the right.

Coming soon

Duplicate Line Remover

Strip repeated lines from a list, with an optional case-sensitivity toggle.

Coming soon

Text Reverser

Reverse a whole block of text, or just the order of its words or lines.

What these tools cover

Counting and measuring text, changing its case, formatting and validating JSON, generating placeholder copy, comparing two versions line by line, converting Markdown to HTML, and cleaning up lists by removing duplicate or reversing lines.

Why browser-side text processing is instant

An upload-based tool has to send your text over the network, queue it, process it, and send the result back — typically a second or more, most of it network latency. A browser doing the same string operation locally finishes before the next screen repaint, which is why the counters here update as you type rather than after you press a button.

Frequently asked questions

Is the text I paste sent anywhere?
No. Text tools are pure string manipulation, which browsers do natively and instantly. Whatever you paste stays in the tab and is discarded when you close it. Nothing is logged, stored or transmitted.
Can I paste confidential material — contracts, drafts, source code?
That is exactly the case these tools are built for. Because no network request is made, there is no server-side copy to worry about. If you want to confirm it yourself, open your browser’s developer tools, switch to the Network tab, and watch: using a tool produces no requests at all.
How much text can these tools handle?
Comfortably hundreds of thousands of characters. The practical ceiling is your device’s memory rather than a limit we set. Very large inputs may make the page feel briefly sluggish while it recalculates.
Do the tools change my text without asking?
No tool modifies your input. Transformations produce a separate result you can copy or discard, so the original is always still there.
Do they work offline?
Yes. Once the page has loaded there is nothing further to fetch, so you can disconnect and keep working.
Are they free, with no account?
Yes — free, no sign-up, no daily cap, no watermark on anything you copy out. Advertising funds the site.

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