Private by architecture

Free file tools that never upload your files.

Convert, organize, and clean files in your browser. No account, upload queue, or server copy.

Browse all tools How privacy works

Compress PDF

Example

PDF

report-q3.pdf2.4 MB

✓

report-q3-compressed.pdf1.1 MB

Reading bytes0.0 / 2.4 MB

network requests since this loaded0

100% in your browser0 files uploaded, ever0 accounts or sign-ups0 watermarks, works offline after first load

87 focused utilities

What do you need to do?

Search by task or format. Press / or Ctrl K.

Common tasks

Start here

Fast paths for everyday file work.

Merge PDFCombine PDFs in your chosen order on your device. Compress PDFShrink a PDF by repacking and re-encoding it. Sign PDFPlace a visible signature directly on your PDF. Resize imageResize images to exact pixel dimensions privately. Compress imageMake images smaller without uploading them. HEIC to JPGConvert HEIC photos to broadly compatible JPG files. Remove Image BackgroundBatch-remove backgrounds and refine edges locally. CSV to JSONTurn CSV rows into structured JSON on your device.

Everything there is

Browse by what you need.

PDF

29 private PDF tools

All 29 tools

Edit PDFRewrite existing PDF text or add new content. Protect PDFPassword-protect a PDF with AES-256 privately. Organize PDF PagesDrag and reorder PDF pages locally. Split PDFSplit a PDF by pages or custom ranges locally. Extract PDF PagesSave selected PDF pages as a new document locally. Delete PDF pagesRemove unwanted PDF pages directly in your browser.

Image

18 private Image tools

All 18 tools

Convert image formatSwitch between PNG, JPG, and WebP formats privately. EXIF Metadata RemoverStrip camera and GPS metadata without uploading. Crop imageCrop images to square landscape or portrait ratios. Upscale ImageEnlarge image dimensions with honest resampling. JPG to PNGConvert JPG to PNG locally with a fixed output. PNG to JPGConvert PNG to JPG without a black background.

Data & CSV

19 private Data & CSV tools

All 19 tools

JSON to CSVTurn JSON arrays and objects into a CSV file. CSV to ExcelTurn CSV data into an Excel-ready workbook. Merge CSVCombine matching CSV files into one clean dataset. Filter CSV rowsFilter CSV rows with clear column conditions. Find and replace in CSVReplace CSV text while preserving table structure. CSV to SQLGenerate portable SQL INSERT statements privately.

Text

11 private Text tools

All 11 tools

Word and character counterCount words and characters without sending text. Case converterChange capitalization and developer naming styles. Text diffFind added and removed lines without an upload. Find and replace textFind and replace text without sending the document. Markdown to HTMLTurn Markdown into safe HTML without uploading it. Word frequency counterAnalyze word and phrase frequency on your device.

Developer

10 private Developer tools

All 10 tools

JSON formatterFormat and validate JSON entirely in your browser. JWT decoderInspect JWT claims without uploading the token. Regex testerTest regex matches and groups with a timeout. Hash generatorHash text or a file without uploading it. Password generatorStrong passwords made in your browser only. Base64 encoder and decoderConvert text and Base64 in your browser.

Or the whole catalogue

All 87 at once.

The useful part, without the usual tradeoffs.

01 · Privacy

Private by architecture.

Your file is read and transformed by code on your device. There is no file-processing server to trust.

POST /upload0 requests

02 · Access

No account wall.

Open a tool, finish the task, and download the result. Core tools are free and require no identity.

0forms before your file

03 · Limits

No artificial upload caps.

We do not meter file uploads because files are not uploaded. Your device and each format set the practical boundary.

~~Max file size: 25 MB~~your device decides

04 · Offline

Keep working when the signal drops.

After a tool and its processing assets load once, FileGizmo caches them on this device so the same workflow can run without a connection.

Two things worth knowing

One you can verify. One nobody else is building.

The privacy claim is measurable, so measure it

Most sites ask you to believe a retention policy. This one makes a claim a browser can check: open the network panel, run a tool, and count the requests that carry your file. The answer is none, because there is no endpoint to send one to.

Rather than leave that as an assertion, the proof page runs a real conversion in front of you and reports the bytes in, the bytes out, the time taken, and the number of off-origin requests. A build stage fails if that last number is ever anything but zero.

Watch it run

Forty-two of these tools work inside your assistant

FileGizmo ships a Model Context Protocol server, so an assistant such as Claude or Cursor can decode a JWT, merge record sets, or read PDF page ranges as a step in its own work rather than sending you to a website to do it by hand.

It runs as a local subprocess and imports the same modules the site and its tests run, so an answer there is the answer you would get in the browser. Read-only, nothing uploaded, no key to obtain.

Set it up

Straight answers

The questions people ask before trusting a file to a website.

Do my files get uploaded to a server?

No. Every tool runs inside your browser, using code your device downloads once and then executes locally. There is no upload endpoint, so there is nothing to send a file to. You do not have to take that on trust: open your browser's network panel, run any tool, and watch the request list stay empty. A build stage fails if a page ever contacts a third-party host, and /proof/ replays the measurement live.

What happens to my file when I close the tab?

It is gone. The file is held in the tab's memory while you work and released when the tab closes. Nothing is written to a server, because there is no server in the path, and nothing persists on our side to delete later — which also means we cannot recover a result for you, so download it before you leave.

Do I need an account?

No. No tool on this site asks for an email address, a sign-in or a verification step, and none of them will. There is no free trial that expires, no daily quota, and no watermark on anything you download.

Is it really free, and what is the catch?

Every tool listed on this page is free to use with no account. The honest catch is that the model is different rather than absent: because files never reach a server, there are no per-file processing costs to recover, which is what makes free sustainable here. There are no advertisements on any tool page, and there never will be.

Is there a file size limit?

None that we impose, because we are not paying to store or move your file. The practical ceiling is your own device: how much memory the browser tab can use for the file and the working copy it makes. Large PDFs and high-resolution images are the usual limits, and /upload-limit-checker will tell you what a given file would run into.

Does FileGizmo work offline?

Yes, once a tool has loaded. A service worker keeps the page and its processing code on your device, so you can open a tool while connected, disconnect, reload it, and keep working. The first visit needs a connection, and tools that carry a large processing engine need that engine fetched once too. Clearing site data removes the cached copy.

Which browsers does it work in?

Any current version of Chrome, Edge, Firefox or Safari, on desktop or mobile. The tools use standard browser capabilities — Web Workers, WebAssembly and the Canvas and File APIs — rather than anything vendor-specific. JavaScript has to be enabled, since the processing is the JavaScript.

How do I compress a PDF without uploading it?

Open /pdf/compress, choose your file, and the work happens on your device. Embedded photographs are re-encoded, text stays selectable and vector art stays sharp. If a file is already as small as it can get, the tool says so rather than handing back a copy and a zero — and if you need a specific size, /pdf/compress-to-200kb and its siblings are the same tool with the target filled in.

Can an AI assistant use these tools?

Yes. FileGizmo publishes an MCP server exposing 42 of these tools to assistants that speak the Model Context Protocol, so an agent can merge, split, convert or hash a file as a step in its own work. /mcp/ has the connection details and the full tool list. No competing file-tool site offers this.

How is this different from the other free PDF sites?

Most of them upload your file, process it on their servers and delete it afterwards on a schedule you have to believe in. That is a reasonable design, and it is a different one: it means your document leaves your machine. FileGizmo does the work where the file already is. /vs/ compares the specifics against the sites people usually ask about, including where those sites are genuinely better.

Your files.Nowhere else.

Don’t trust us? Open your network tab and watch.

No ceremony

Drop a file. That’s it.

Find a tool

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