PDF Alt Text Editor
FreeAdd and edit alt text for images in PDF documents
Drop PDF here or click to browse
Add descriptive alt text to every image for accessibility
About PDF Alt Text Editor
Images in a PDF mean nothing to a screen reader unless they carry alt text describing what they show. Without it, visually impaired readers miss part of your document entirely. This editor lets you add and update the alt text for images in your PDF.
Upload your file, write descriptions for the images, and the tool embeds that alt text into the document. It runs in your browser, is free, and adds no watermark or signup. Your PDF is processed only to apply the alt text you provide, so the content stays private.
Common uses
- Adding descriptions to images for screen-reader users
- Improving a document's accessibility before publishing
- Updating vague or missing alt text on existing images
- Meeting accessibility requirements for illustrated documents
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports APPLICATION/PDF. Up to 50 MB.
- 2
Click "Process — PDF Alt Text Editor"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
What makes good alt text?
Describe what the image conveys in context, concisely. Skip phrases like 'image of' and focus on the information the picture provides.
Do all images need alt text?
Meaningful images do. Purely decorative images can be marked as such so screen readers skip them rather than read empty descriptions.
Does adding alt text change the visible page?
No, alt text is read by assistive technology and does not appear on the visible page for sighted readers.
Can I use PDF Alt Text Editor on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.