Valestiom

All online tools

Search the complete Valestiom directory and open a focused tool for files, writing, development, calculations, conversions, and everyday work.

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Open a focused category page to compare tools for the same kind of task.

Complete tool directory

Every Valestiom tool is listed here and runs directly in your browser.

What these tools are

Valestiom is a collection of 102 single-purpose tools that each do one job and then get out of the way. There is no account to create, nothing to install, and no dashboard to learn. You open the page for the thing you need, do it, and close the tab.

The unusual part is where the work happens. Each tool is a small program that the browser downloads once and then runs on your own machine, using the same JavaScript engine that draws every other page you visit. When you pick a file, the browser hands the tool read access to that file locally. The bytes are processed in the tab and the result is written back to a download on your device. Nothing is sent to a server, because there is no server doing the work.

That design has a real cost, and it is worth knowing before you start. Speed and capacity depend on the device you are holding rather than on rented hardware, so a large PDF that a desktop handles in two seconds may take noticeably longer on an old phone. Most tools declare an explicit size ceiling and refuse oversized input up front instead of freezing halfway through. For files far past those ceilings — a multi-gigabyte video, a thousand-page scan — a desktop application is still the better answer, and we would rather say so than pretend otherwise.

Privacy tools

How the collection is organised

The ten categories are grouped by the kind of work you are doing rather than by file extension. PDF Tools, Image Tools, and Text Tools cover the three formats people arrive with most often. Developer Tools is the largest section at 27 tools, holding the JSON, encoding, hashing, and markup utilities you reach for while debugging. Calculators handles everyday arithmetic, Converters handles format and unit changes, Generators produces new artifacts like QR codes and invoices, Security covers passwords and hashes, Privacy Tools deals with metadata, and Utilities holds the remainder.

One boundary causes more confusion than the rest, so it is worth stating plainly. A tool that changes an image format can plausibly live in either Image Tools or Converters, and both categories exist. The split is by how you think about the task: the named one-way conversions people search for directly, like PNG to JPG or HEIC to JPG, sit in Converters alongside unit conversion, while the tools that edit an image you already have — cropping, resizing, compressing, rotating — sit in Image Tools. Several tools are genuinely useful from either direction, and the category pages link across the boundary where that is true.

If you already know what you want, the search box above is faster than browsing. It filters all 102 tools as you type and matches on tool names and descriptions, so a partial word is usually enough. Searches are also addressable: adding a query to the page URL loads the directory with that filter already applied, which makes a filtered view easy to bookmark or send to someone.

Developer tools Converters Image tools

Choosing between tools that look alike

Several pairs of tools sound interchangeable and are not, so here are the distinctions that come up most. For text, the word counter gives you totals — words, characters, sentences, reading time — while the frequency analyzer tells you which words those are and how often each appears; the first is for meeting a limit, the second for spotting repetition.

For JSON, the formatter reindents and pretty-prints structure you can already parse, whereas the validator exists for the case where you cannot: it reports what is wrong and where. Reach for the validator first when something is broken, then the formatter once it parses.

For images, resizing changes the pixel dimensions of the whole picture and cropping discards the parts you do not want, which are different fixes for the two different reasons an image is too big. Compression is a third thing again: it lowers file size while keeping the dimensions. And when a PDF is too large, compress the PDF rather than the images inside it — the PDF compressor works on the assembled document, which is what an upload limit actually measures.

Word counter JSON validator Resize an image Compress a PDF

What local processing does and does not protect

Every tool in this directory declares that it processes input locally, requires no network access, and uploads nothing. Those declarations are not just documentation: each tool ships with tests that fail if it attempts a network request while handling your data, and the catalog build refuses to publish a tool whose declaration and behaviour disagree. One tool asks for a hardware permission — the QR scanner needs your camera — and the browser will prompt you before it gets one.

The practical consequence is that sensitive files never become someone else's problem. A contract, a medical scan, a spreadsheet of customer records, a photograph taken at home: these can be processed without a copy landing in a queue you cannot inspect, on a disk you do not control, subject to a retention policy you did not read. For metadata removal in particular this is close to the whole point, since uploading a photo to strip its GPS coordinates means handing over those coordinates first.

It is worth being precise about the limits of that guarantee, because local processing is not a general privacy shield. Loading any page here fetches the page and its libraries over the network, as every website does. The browser you are using, any extensions you have installed, and your operating system all still see what you do. Files you download are ordinary files on your disk, with whatever backup or sync you already have running. And a tool that removes metadata cannot change what a picture visibly shows.

Remove image metadata Security tools