Helperbird Works on PDFs Too
PDFs are everywhere - academic papers, work documents, ebooks, forms. But they're often hard to read. Small text, no customization options, no accessibility features.
Helperbird changes that. Open a PDF in Helperbird's reader and you get text-to-speech, Speed Reading, text boxes and drawing tools.
Learn how to use Helperbird with PDFs
Related features
- Write on PDFs - Type text directly into a PDF to fill forms and add answers.
- PDF Drawing Tools - Draw freehand, add shapes, arrows, and lines directly on PDFs.
- Annotations & Sticky Notes - Save sticky-note comments on web pages while researching.
- Text to Speech - Have PDF content read aloud with natural-sounding voices.
- OCR / Screenshot Reader - Extract text from scanned or image-based PDFs.
- Immersive Reader - Open PDF text in a clean, customizable reading format.
What You Can Do
Find text on the current page: Use the free search tool to move between matches on the page you are reading, without searching the whole document.
Adjust your view: Use the zoom slider, Fit width, or Fit page in a separate toolbar. Show or hide it from the header.
Read PDFs aloud: Select text and have it read to you with text-to-speech.
Read one word at a time: Choose Speed Reading in All Features or the reader header. The card opens above the current PDF page and waits for you to start.
Mark important passages: Use Draw for lines and shapes. The web Highlighter palette and Highlight Menu do not run inside this PDF Reader.
Type on the page: Use Add Textbox in the reader's toolbar to put comments and answers straight onto the PDF. Download With my changes to keep those annotations in the file.
Draw on PDFs: Use pen, shapes, arrows, and lines to mark up documents visually.
Use Immersive Reader: Open PDF text in a clean, customizable reading view.
A PDF page is drawn as a picture with an invisible text layer on top. Web page overlays, rulers and font changes do not apply to the PDF itself. Immersive Reader has its own font choices, Calibri, Sitka and Comic Sans. OpenDyslexic and Lexend apply to web pages, not to a PDF's own text.
Keep a Copy of Your Work
The reader keeps one current PDF session locally so you can recover it after reopening. This does not overwrite your original or sync the PDF to another device. Download With my changes before switching files or sharing your work. See saving and recovery.
Why This Matters
Most PDF readers give you very few options. You read what you're given. Helperbird lets you customize the experience - make text bigger, hear it read aloud, add notes, change colors.
For people with dyslexia or visual difficulties, this can make the difference between a PDF being usable or not.
Who Uses This
Students studying from academic PDFs and textbooks.
Researchers annotating papers and highlighting key findings.
Professionals reviewing contracts, reports, and documents.
Anyone with dyslexia who needs accessible PDF reading tools.
Is This Free?
Opening a PDF, searching the current page, adjusting zoom, reading it aloud with your device's voices, adding text boxes and downloading it are free. You can also type and format notes in the side Notepad, then add them to the current page for free. Drawing is free too. Immersive Reader is free for up to 1,200 characters per launch; select a shorter passage if a page exceeds the limit. Helperbird Pro adds longer Immersive Reader passages, voice typing, grammar, equations, Screenshot Reader, Summarize and Translate.
