Yes, all ZapFile tools are completely free with no hidden costs or subscriptions.

Absolutely. All processing happens directly in your browser. Your files are never uploaded to any server.

Do I need to create an account?

No. ZapFile requires no registration, login, or account creation.

Does this tool work offline?

Most tools work offline after the first load. ZapFile is a Progressive Web App you can install.

Can I use this on mobile?

Yes! All tools are fully responsive and work on mobile devices.

CSV ↔ JSON

Convert CSV and JSON, preview CSV as a sortable table

Delimiter:

First row as headersDetect numbers and true/falseCodes with leading zeros (postcodes, IDs) stay text; empty cells become null.JSON Lines (one object per line)

CSV Input

Saved in this browser

JSON Output

Frequently Asked Questions

QR Code GeneratorGenerate QR codes with custom colors and logo

SVG to PNGConvert SVG vector files to PNG with custom size

Base64 EncoderEncode files or text to Base64 and decode back

Color PickerPick colors from a picker, the screen or an image; convert HEX, RGB, HSL, OKLCH and build scales

Runs on your device, not our servers

This page uses browser APIs (Canvas, WebAssembly, workers, etc.) so your files stay on your machine.

Processing happens in this tab — close the tab and the session ends.
No ZapFile account is required and we do not store your uploads (there are none).
Download only what you choose; nothing is sent to us for “cloud processing.”
Verify it yourself: DevTools → Network while using a tool — you should not see your file bytes uploaded to ZapFile.
Add ZapFile to your home screen for a faster app shell and offline access to cached pages (tools still need a capable browser).

Frequently Asked Questions

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