jarvisbox

Mobile browser tools — compress, resize, generate, strip

Privacy-first photo and QR utilities that run entirely in your browser. No uploads, no signup, nothing leaves your device.

100% client-side · no telemetry on your files

Tools

Dev Tools(10)

Generators(10)

Calculators(10)

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Audio Tools(14)

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Markdown Tools(10)

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Finance Tools(20)

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DevOps Tools(10)

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Time Tools(10)

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Design Tools(10)

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AI Tools(10)

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Games(20)

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Math Tools(10)

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Accessibility Tools(10)

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Crypto & Encoding(10)

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Pick & Random(10)

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Health & Fitness(10)

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Sport & Fitness(10)

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Network Tools(10)

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Color Tools(10)

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Format & Validate(10)

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Music Tools(10)

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Code Tools(11)

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Home & DIY(10)

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Car & Vehicle Tools(10)

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Pet Care Tools(10)

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Miscellaneous Tools(10)

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Fun & Party Tools(10)

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Advanced Time Tools(10)

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Share & Link Tools(10)

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Why browser-only tools?

Most online image tools require uploading your files to a remote server. That works, but it puts your photos — and any embedded data like GPS coordinates, device metadata, or timestamps — outside your control. The tools on this site use modern browser APIs (Canvas, Web Workers, Blob, FileReader) to do all processing on your device. Your files stay local; you keep the original; nothing is logged.

That same approach makes the tools fast on mobile: no upload wait, no download wait, and they keep working with no signal. Every page is mobile-first, with large tap targets, drag-and-drop on desktop, and clean output ready to share.

Frequently Asked Questions

Are my files uploaded anywhere?
No. Every tool here runs 100% inside your browser using the Canvas API and JavaScript. Files never reach a server, account, or cloud — your originals stay on your device.
Do these tools work on iPhone and Android?
Yes. All tools are mobile-first and work in Safari, Chrome, and Firefox on both iOS and Android. No app install required.
Is it free? Any signup or watermark?
Completely free with no signup, no usage limits, and no watermarks added to your files (you can add your own watermark with the Watermark tool).
Why use a browser tool instead of an app?
Browser tools install nothing, claim no permissions, and process files locally. There is no app store review, no background data collection, and no risk of your photos being silently uploaded to a third-party server.
Which tool should I use for social media posts?
Use the Resizer for Instagram, Twitter, or Facebook dimensions, the Compressor to keep files under upload limits, and the Watermark tool to brand photos before sharing.
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