Phrase search
Mark every occurrence of a word, name, clause or short phrase.
⌕ Searchable text🎨 6 colours🔒 Password support✓ Original preserved
PDF
Drop your PDF here
or click to choose a document
Choose PDFSearchable PDFs · up to your account upload allowancePrecise controls
Highlight only what matters
Search the document text layer and configure the annotations added to matching phrases.
Page selection
Process the whole file or limit work to specific pages and ranges.
Colour and opacity
Choose one of six useful colours and tune annotation transparency.
Encrypted files
Open password-protected PDFs when you know the correct password.
Before you highlight
Scans and photographs need OCR before their text can be found.
Line breaks, unusual spacing, ligatures and custom font encodings can affect matches.
Highlights remain visible annotations; they do not remove or conceal document text.
How to highlight a PDF
Choose
Upload a PDF and provide its open password if necessary.
Search
Enter the exact word or phrase and choose the pages.
Style
Select a colour and opacity that keeps text readable.
Verify
Download the copy and inspect every expected page.
Frequently asked questions
Why did the tool find no matches?
The PDF may be scanned, the text may use unusual encoding, the phrase may cross line boundaries, or the chosen page range may exclude it.
Is the search case-sensitive?
No. Matching is case-insensitive so “Invoice” and “invoice” are treated alike.
Can I use several colours in one run?
One colour is applied per run. Download the result and process it again to add another search phrase or colour.
Will links and form fields still work?
Highlights are PDF annotations and normally preserve existing content. Always verify important documents after processing.
Does this permanently alter my original?
No. Your browser downloads a separate highlighted PDF; the source file on your device is unchanged.