Convertify PDF Editor - Edit PDF Free Online
Convertify PDF Editor — the best free PDF editor for annotations and form filling. Add text, images, and shapes, then 'Flatten' your edits. No sign-up, no watermarks, no download needed.
Tool Under Construction
We're currently building this feature to make it perfect for you. It will be available very soon!
About Convertify PDF Editor
Annotate, fill, and markup your PDF documents with Convertify's high-performance editor. Add text, images, shapes, and arrows, then use our 'Flattening' feature to bake your edits into the document layer—making them permanent and professional. Perfect for filling forms or marking up blueprints without the lag of traditional cloud-based editors.
Why Use Convertify's Convertify PDF Editor?
Lightning Fast
Process files instantly in your browser
100% Secure
Files never leave your device
Works Everywhere
Desktop, tablet, and mobile compatible
No Watermarks
Clean, professional output every time
Common Use Cases
- 1Filling out PDF application forms and surveys
- 2Marking up architectural blueprints with notes and arrows
- 3Adding comments and peer-review notes to reports
- 4Annotating student assignments for feedback
- 5Adding branding images or stamps to design mockups
Convertify processes all files directly in your browser — nothing is uploaded to any server. Your documents stay private and secure on your device at all times.
The complete guide to PDF Editor
Last updated June 1, 2026Editing a PDF directly — changing text, adding annotations, inserting text boxes — avoids the round-trip of converting to Word, editing, and converting back. Convertify's Edit PDF tool works on digitally-generated PDFs and lets you click directly on text to modify it, add free-text annotations anywhere on the page, insert shapes, and highlight passages.
There's an important limitation in all browser-based PDF editors: they edit the rendered view of the PDF, not the underlying text stream. This means fonts are matched as closely as possible, but if your PDF uses a custom embedded font that isn't available in the browser, the edited text will appear in a fallback font. For the most common use cases — correcting a typo, adding a note, filling in a blank field — the visual result is clean.
How PDF Editor on Convertify compares
| Feature | Convertify | Typical online tool |
|---|---|---|
| Files uploaded | Never | Yes |
| Text editing | Yes (digital PDFs) | Yes |
| Annotation tools | Highlight, draw, text | Varies |
| Image insertion | Yes | Sometimes |
| Daily limit | Unlimited | 3 per day |
| Sign-up | No | Often |
Step-by-step: how to use PDF Editor
- 1
Upload the PDF
Drag or click to upload. Pages render in the editor canvas.
- 2
Select editing mode
Choose from: Text Edit (click text to modify), Add Text (insert new text anywhere), Highlight, Underline, Strikethrough, Add Image, or Draw Freehand.
- 3
Make your edits
Click on the content you want to change and type. Drag new elements to position them. Resize images and text boxes with corner handles.
- 4
Save and download
Click Save PDF. All edits are embedded in the downloaded file — readable in any PDF viewer.
Real-world scenarios
Correcting a typo in a finalized document
A name is misspelled in a PDF report that's already been formatted and paginated. Edit PDF fixes it in place — no need to regenerate the whole document from the source file.
Adding annotations for review
A manager annotating a team member's draft report adds comments, highlights key sections, and inserts arrows pointing to figures that need updating. The annotated PDF is returned as the review copy.
Filling in form-style PDFs without form fields
Some forms are PDFs with blank lines but no actual form fields. Use the Add Text tool to type responses in the appropriate positions — faster than printing and handwriting.
Adding a company logo or stamp
Insert a company logo image on a document header, or add a stamp image (RECEIVED, APPROVED, PAID) on specific pages.
Troubleshooting and edge cases
The font doesn't match after I edit text.⌄
Exact font matching is only possible when the original PDF's embedded font is one the browser can access. For near-perfect matching, choose the closest available font in the text toolbar. For major mismatches, add the correction as a white rectangle covering the old text, then a new text box on top in a matching font.
I can't click on text to select it.⌄
If the PDF is a scanned image rather than a digital document, there's no text layer to edit. Run OCR PDF first to add a text layer, then open the OCR'd output in the editor.
How to Edit PDF Free Online — No Download, No Sign-Up - Step by Step Guide
Upload
Open your PDF in our browser-based editor.
Edit
Add text, draw shapes, or insert images to markup the file.
Save
Flatten the document and download your edited PDF.