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Merge PDF
Compress PDF
Split PDF
JSON formatter
UUID generator
Password generator
QR code
Regex tester
Compress image
E-Rechnung hub
XRechnung validator
Sign PDF
JWT decoder
Base64 encoder
Hash generator
PDF OCR
HEIC to JPG
Resize image
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Merge PDF
Compress PDF
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Sign PDF
PDF OCR

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Compress image
Resize image
HEIC to JPG
QR code
Video Studio

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PDF OCR
HEIC to JPG
Resize image
HTML minifier

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Compare Tentaco tools side by side

Tool guides

Compare Tentaco tools side by side

Open two tools or text blobs in one view — JSON formatter vs workbench, JWT vs Base64, and more.

Compare Tentaco tools side by side on Tentaco groups related browser tools in one place. Open a linked guide to run the matching mode — most processing stays on your device unless a tool explicitly uses an online step.

Use this collection when you need a clear starting point, short how-to steps, and privacy notes before picking a specific tool. Browse related Tentaco tools on this hub, open a studio mode when you need a fuller workspace, and keep files on your device whenever the tool runs locally.

Tool guides

Format JSON online — free validator & pretty print
Beautify, minify and validate JSON in your browser. Syntax errors with line hints — copy or download instantly.
Code Studio online — free in your browser
Format, validate and convert JSON, XML, SQL, HTML, CSS, JS and more — one developer workspace.
JWT decoder online — inspect tokens free
Decode and inspect JSON Web Tokens in your browser. Header, payload and signature — no upload.
Base64 encode & decode — free
Encode text to Base64 or decode Base64 back to plain text. Tentaco Base64 Encoder / Decoder: review input and get an instant result — free, no sign-up.

Related collections

Free PDF tools online
Merge, compress, split, convert and edit PDF files in your browser — no install, no upload for local tools.
Privacy-friendly browser tools
Tools that run locally without uploading your data — GDPR-conscious workflows.
Free developer tools online
Format JSON, test regex, encode URLs, decode JWT and more — everyday coding utilities in the browser.

Privacy & data handling

Privacy depends on the selected tool. Check the privacy block on each tool page for file transfer, processing location and storage.

LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.

File transfer: No — files stay on your device
Processing: Locally in the browser
External APIs: None for this tool
Temporary storage: Browser memory only while the tab is open
Permanent storage: Only if you download or save the result yourself

Frequently asked questions

Where is the compare page?

Use /compare to open two tool panes or a text/JSON diff. This hub links popular presets.

Can I share a compare link?

Yes — the compare page can copy a URL with left/right tool slugs encoded in the query string.

Browse all tools