Free developer tools
Paste it. Read it. Nothing leaves your tab.
These are small tools for working with data, built so that you can trust them. They run entirely in your browser, they have no way to send what you paste anywhere, and there is nothing to sign up for. You will not find any advertising or analytics on them either.
The tools
Simple tools that keep your data safe.
Each tool is a single self-contained file. You can save it to disk and it keeps working with no network at all.
Encode and decode in either direction. Paste anything and it automatically encodes or decodes, reads data URLs, handles the URL-safe alphabet, and tells you what the bytes turned out to be.
Ready JWT jwt.safepaste.devRead the header and claims of a token, with the time fields formatted into your own time zone.
Ready URL encoding url.safepaste.devPercent-encode and decode in either direction, and pull a query string apart into its parameters so you can edit them and put it back together again.
Ready Timestamps time.safepaste.devConvert between epoch seconds, milliseconds and ISO 8601 dates, and see the same moment in whatever time zone your machine is set to.
Ready Hashes hash.safepaste.devCalculate the SHA-256 and other hashes of some text or a file you drop in, using the browser's own cryptography, and check them against the hash you expected.
Ready JSON json.safepaste.devFormat or minify JSON, and when it will not parse, get an error message that points at the character where the document stopped making sense.
ReadyWhy bother
The things you paste into a converter are not harmless.
It might be a token, a config file, a customer record, or a response body from a system that is misbehaving. People paste all of it into whatever page a search turns up, and that page is usually funded by advertising.
The browser enforces it
Every page ships connect-src 'none', which makes fetch,
XMLHttpRequest, WebSocket, EventSource and
sendBeacon fail at the browser level. Not by convention. By policy.
Nothing is remembered
Nothing is kept in cookies, local storage, session storage or IndexedDB. There is no account to make and no preference to save. Close the tab and there is nothing left behind.
No ads, no analytics
SafePaste does not make money from your attention, so nothing here wants to know who you are. There are no ads, no analytics scripts and no trackers on any page, and nothing is keeping count of what you paste.
Do not take our word for it
Check it yourself in about a minute.
- Open a tool, then open your browser's developer tools.
- Switch to the Network tab and reload the page.
- Paste something in and use it. The list should show the document itself and nothing else, however long you keep going.
- While you are there, look at View Source. The policy is in the head of the page and the whole application is in the same file.
These are free, and they stay free.
There is no paid tier and nothing is being upsold, because the moment a tool like this has a business model built on attention, the incentives point the wrong way. If they save you some time, you can make a donation to show your appreciation.