How to edit a PDF by adding content with OnyxPDF
- Drop your PDF into the tool and pick the page to work on.
- Add text, an image, a shape or a whiteout box, and drag it into place.
- Repeat on other pages if needed.
- Click “Save” and download the edited PDF.
Why do it in your browser instead of uploading?
- No upload and no paywall: iLovePDF and Smallpdf both reserve their content editor for paying users; this one is free.
- Visual placement: you see the page and drag items where they belong, instead of typing coordinates.
- Whiteout + retype covers most “change a word” jobs honestly: cover the old text, type the new.
- Everything is baked into a normal PDF that opens anywhere.
Good to know (honest limits)
- It cannot edit existing embedded text in place — no client-side library can rewrite a PDF’s text runs reliably, and paid desktop tools are the real fix for heavy editing.
- A whiteout box visually covers content but does not delete what is underneath — use Redact PDF when content must be truly removed.
- Fonts for added text are the standard PDF fonts, so added text may not match the document’s original typeface exactly.
Frequently asked questions
Can I change a word that is already in the PDF?
Not in place. Cover it with a whiteout box and type the replacement on top — or convert the PDF to Word, edit there, and convert back. Both routes are free on this site.
Does whiteout delete the text underneath?
No — it covers it visually. If the hidden text must be gone for privacy or legal reasons, use Redact PDF, which re-renders the page so covered content cannot be recovered.
Is editing really free here?
Yes. The big sites paywall their editors (iLovePDF Premium, Smallpdf Pro); this editor has no account, no trial and no watermark.
Are my files uploaded to edit them?
No. The editor renders and modifies the PDF entirely in your browser.