How to Edit a PDF for Free: Add Text, Highlight, White-Out and More
Fill in non-fillable forms, correct details, highlight clauses and add images or signatures to a PDF — free, in your browser.
Editorial disclosure: Pyalm publishes and maintains the products and free tools discussed on this site. Regulatory statements are linked to primary sources where applicable. No independent professional review is claimed unless a reviewer is explicitly named.
Most "edit a PDF" jobs are small: fill in a form that isn't fillable, correct a date, highlight what someone needs to read, or add a stamp or signature. You don't need expensive desktop software for that.
What you can do
The free PDF Editor adds content on top of any page:
| Tool | Use it to |
|---|---|
| Text | Fill in forms, add notes, type corrections |
| Date | Insert today's date in one click |
| Tick / Cross | Complete checkboxes on printed-style forms |
| Highlight | Mark clauses or figures for a reader |
| Box | Draw attention to a section |
| White-out | Cover text you want to replace |
| Image | Add a logo, stamp or photo |
| Signature | Draw, type or upload your signature |
How to edit a PDF
- Open the PDF Editor and choose your file.
- Pick a tool from the toolbar and click on the page.
- Drag items to move them; use the green corner handle to resize.
- Click Download PDF.
How to "change" existing text
PDFs store text as positioned characters, not paragraphs, so free editors don't re-flow existing text. The reliable method:
- Use White-out to cover the old text.
- Add a Text box with the correction on top, matching the size.
White-out is not redaction
White-out hides content visually, but the original text may still be in the file and extractable. To truly remove sensitive data (ID numbers, salaries), after whiting out run the file through Compress PDF in strong mode — every page becomes an image and the hidden text is gone.
Any language
Text in Arabic, Hindi, Malayalam and other scripts is supported — it's embedded as an image so it displays correctly in every viewer.
Why browser-based PDF tools are safer
Most online PDF sites upload your file to their servers. Pyalm's PDF tools run entirely in your browser — the file is read, processed and saved on your own device and never sent anywhere. That matters for contracts, invoices, bank statements and ID documents.
Stop handling business PDFs by hand
Most business PDFs are invoices, quotations, receipts and statements. Pyalm Books generates them for you — VAT-compliant, numbered, emailed to the customer and stored — so there's nothing to merge, rename or fix afterwards.
Related free tools
PDF Editor | Sign PDF | Watermark PDF | Merge PDF | All free tools