Add Comments

Sticky note style comments.

100% private Runs locally No sign-up

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Heavy libraries load on demand so the page shell stays fast.

About Add Comments

Add Comments (add comments pdf) is a free pdf tools tool on Toolncy. Sticky note style comments. Unlike cloud converters, add comments pdf runs locally with WebAssembly and browser APIs — your files never leave this device. No account, no upload queue, and no watermarks. Browse 34 tools in PDF Tools when you need a related step.

How to use Add Comments

1Open Add Comments on Toolncy — no install or sign-up.
2Drop your PDF into Add Comments, or click to select files stored on this device.
3Set add comments pdf options for your document, then run processing in the browser.
4Download the updated PDF from Add Comments. Source pages were never uploaded.

Frequently asked questions

Is Add Comments free to use?

Yes. Add Comments on Toolncy is free with no tiers, trials, or sign-up. Use add comments pdf as often as you need.

Does Add Comments upload my files?

No. Add Comments processes everything locally in your browser. Toolncy never receives the files you open for add comments pdf.

Is Add Comments safe for confidential work?

Yes for architecture: nothing is uploaded. Still use a trusted device — local malware can read browser memory like any app.

Does Add Comments work on phones?

Yes on modern mobile browsers. Heavy pdf tools jobs may be slower on older phones because add comments pdf runs on-device.

Will Add Comments change PDF quality?

Add Comments preserves page content unless you choose a compress/optimize mode. Vector text and embedded fonts stay intact when the operation is structural.

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About Add Comments

How to use Add Comments

1Open Add Comments on Toolncy — no install or sign-up.

2Drop your PDF into Add Comments, or click to select files stored on this device.

3Set add comments pdf options for your document, then run processing in the browser.

4Download the updated PDF from Add Comments. Source pages were never uploaded.

Frequently asked questions

Is Add Comments free to use?

Yes. Add Comments on Toolncy is free with no tiers, trials, or sign-up. Use add comments pdf as often as you need.

Does Add Comments upload my files?

No. Add Comments processes everything locally in your browser. Toolncy never receives the files you open for add comments pdf.

Is Add Comments safe for confidential work?

Yes for architecture: nothing is uploaded. Still use a trusted device — local malware can read browser memory like any app.

Does Add Comments work on phones?

Yes on modern mobile browsers. Heavy pdf tools jobs may be slower on older phones because add comments pdf runs on-device.

Will Add Comments change PDF quality?

Add Comments preserves page content unless you choose a compress/optimize mode. Vector text and embedded fonts stay intact when the operation is structural.