Edit PDF Online
Add text, images, shapes, and annotations to any PDF document — entirely in your browser. Your files are processed locally and never uploaded to any server, ensuring complete privacy and lightning-fast editing.
Drop your file here
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Max 50 MB · PDF only
Why Edit PDFs Online?
PDF documents are designed to preserve formatting across devices, but this makes them notoriously difficult to modify. Traditional PDF editing requires expensive desktop software like Adobe Acrobat Pro, which costs hundreds of dollars per year. Our free online editor removes that barrier entirely.
Whether you need to add a note to a contract, insert your company logo onto a document, highlight important sections for review, or fill in text fields on a form that isn't fillable — our browser-based editor handles it all without installing any software.
Unlike most online PDF editors that upload your files to remote servers, MiConvert processes everything directly in your browser using advanced client-side technology. This means your sensitive documents — contracts, financial statements, medical records — never leave your device, giving you the security and privacy that cloud-based competitors cannot match.
How to Edit a PDF
- 1
Upload your PDF document by dragging it into the editor or clicking the upload button.
- 2
Use the toolbar to add text, insert images, draw freehand annotations, or highlight areas of the document.
- 3
Click on any element you've added to move, resize, change color, or delete it. Navigate between pages using the page controls.
- 4
When finished, click 'Export PDF' to download your edited document with all changes embedded.
Key Features
- Add text in any language with Unicode support
- Insert images (PNG, JPG) anywhere on the page
- Freehand drawing and highlighting tools
- Drag, resize, and style every element
- Navigate and edit multi-page documents
- 100% client-side — files never leave your browser
- Mobile-first design with touch-optimized controls
- Export edited PDF with all changes embedded
- No signup, no watermarks, completely free
Frequently Asked Questions
Can I edit the existing text in a PDF? ▼
Our editor allows you to add new text, images, and annotations on top of existing PDF content. Modifying the original embedded text of a PDF requires desktop-level software due to the complex internal structure of PDF files. However, you can use our tool to overlay new text precisely on top of existing content, effectively replacing it visually.
Is my document secure? ▼
Absolutely. Your PDF is processed entirely within your browser — it is never uploaded to any server. All editing happens locally on your device using client-side JavaScript technology (PDF.js and pdf-lib). This provides the highest level of document privacy possible.
Does it work on mobile phones? ▼
Yes. Our editor is designed with a mobile-first approach, featuring a bottom toolbar optimized for thumb-friendly interaction, pinch-to-zoom for navigating PDF pages, and touch-optimized controls for placing and resizing elements.
What types of content can I add? ▼
You can add text in any language (including Chinese, Japanese, Korean, Arabic, Vietnamese, and more), insert images (PNG, JPG), draw freehand with a pen tool, and add highlight/rectangle annotations. All added elements can be moved, resized, and styled with different colors and sizes.
Is there a file size limit? ▼
Since processing happens in your browser, performance depends on your device. Most PDFs under 50MB work smoothly. For very large or complex PDFs with hundreds of pages, we recommend editing on a desktop browser for the best experience.
Do I need to create an account? ▼
No. Our PDF editor is completely free to use with no registration, no watermarks, and no limitations on the number of edits. Premium features like batch editing and custom font uploads may be available in the future.