About DevSnap

What this is

DevSnap is a set of 34 single-purpose tools for formatting, converting, inspecting and sharing developer data: JSON, YAML, SQL, XML, CSV, regular expressions, JWTs, cron schedules, hashes, diffs, timestamps, QR codes and a few odds and ends that turned out to be needed constantly.

There is no account, no install step, no trial tier and no dashboard. You open a page, you paste something, you get a result, you copy it. That is the whole product.

How the tools work

Every tool runs as JavaScript in your browser, using the same platform primitives your own application would use: the native JSON engine for parsing, the Web Crypto API for hashing, the Canvas API for rendering images, and the standard URL and base64 utilities for encoding.

Nothing is uploaded. This is not a promise about our intentions, it is an architectural property: there is no endpoint that receives your input. If you open the browser's network panel while you use a tool, you will see the page load and nothing else.

The practical consequence is that a payload containing a credential, a customer record or an internal hostname stays on your machine, and the tool still works with the network switched off.

What we publish

Alongside the tools there are 8 longer guides. They exist because a tool that shows you a ratio or a field breakdown is more useful when you understand why the rule is what it is. Each one covers a single concept — reading a JWT, cron semantics, timezone handling, WCAG contrast, UTM naming — and is written to be useful even if you never touch the site again.

How it is funded

Through advertising. The layout is deliberate about that: the tools are the product, and the advertising is kept out of the way of the work. We do not sell data, we do not run tracking scripts beyond what the ad network requires, and we do not ask for an email address.

If a tool is useful enough that you would pay for it, that is worth telling us about. The most valuable thing you can send us is a description of what you were trying to do and what the tool could not do.

Corrections

Tools get things wrong. A regex engine that mishandles a flag, a date calculation that forgets a daylight saving transition, a formatter that changes a string literal — all of these are the kind of thing that silently breaks somebody's build.

If a tool gives you a wrong answer, tell us with the input that produced it. We will fix it and, where the tool has a documented limitation, we will say so on the page.

Relationship to other projects

DevSnap is an independent project. It is not affiliated with, endorsed by or sponsored by Google, Adobe, GitHub, Mozilla or any other organisation whose name appears in its documentation. Product names and trademarks belong to their respective owners and are used here only to describe compatibility.