Upload Instead of Recopying
Choose a text-based PDF up to 10 MB. The browser reads selectable words and places them in the editor, reducing the copy-and-paste work needed for reports, handouts, proposals, essays, and exported documents.
FREE
PDF text extraction • spelling • grammar • punctuation
Free PDF Spelling Checker Online
Upload a text-based PDF and this PDF spelling checker extracts readable text inside your browser. Review up to 5,000 characters for spelling, grammar, and punctuation, compare the corrected text, and copy the changes you approve. Your original PDF is not sent to our server.
Free PDF text checks
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PDF Review
See a PDF Text Check
Extracted Text
The report contain several usefull recomendations for the team.
Each section were reviewed however two captions is still unclear.
The final PDF was export yesterday and need one more proofread.
Please verify names numbers and references manualy.
Suggested Text
The report contains several useful recommendations for the team.
Each section was reviewed; however, two captions are still unclear.
The final PDF was exported yesterday and needs one more proofread.
Please verify names, numbers, and references manually.
What Happens
Readable PDF text is extracted locally in your browser
You review suggestions before changing the source document
A PDF Spell Checker That Starts With the File
Most PDFs are designed for stable sharing, not live editing. This tool creates a practical review path: extract readable text locally, run a language check, then apply approved corrections in the document that produced the PDF.
Check the Extracted Passage
Use the full review for spelling, grammar, and punctuation together, or select a focused mode. The result keeps the original and suggested text visible so you can inspect wording rather than accept silent changes.
Keep Layout Decisions With You
The checker does not overwrite the PDF or pretend to preserve its visual layout. Copy only the corrections you approve back into Word, Google Docs, InDesign, your PDF editor, or the original authoring file.
How to Spell Check a PDF Online
Choose a Readable PDF
Upload a PDF that contains selectable text. A document exported from Word, Google Docs, Pages, or a publishing tool usually works. A photo scan may contain only pixels; if no text is found, run OCR in a trusted document tool before returning here.
Review the Extracted Text
Confirm that paragraphs, headings, hyphenated words, and columns were extracted in a sensible order. PDF text layers can store words by position, so complex tables or multi-column layouts may need manual cleanup before a language check.
Run the Appropriate Check
Choose the document language and check type. Full mode reviews spelling, grammar, and punctuation. Focused modes are useful when technical terms are intentional or when you want to inspect one class of issue at a time.
Apply Corrections in the Source
Compare each suggestion with the original PDF. Verify names, figures, citations, page references, formulas, and brand terms yourself. Make accepted changes in the editable source, export a new PDF, and perform a final visual proofread.
What This PDF Spelling Checker Reviews
The useful unit is the extracted text, not the rendered page image. The tool helps with language mechanics while making its file and layout boundaries explicit.
Misspellings and Context
Find likely typos, duplicated letters, common word confusions, and contextual spelling problems in readable PDF text. Proper nouns and specialist terminology still require human confirmation.
- Typos and misspellings
- Commonly confused words
- Context-aware suggestions
Grammar and Sentence Flow
Review agreement, verb form, sentence boundaries, and awkward constructions that may have survived drafting. Suggestions are easier to judge because the source passage remains visible beside the corrected version.
- Agreement and tense
- Fragments and run-ons
- Clarity suggestions
Punctuation Cleanup
Check commas, periods, apostrophes, quotation marks, and punctuation around transitions. PDF extraction may introduce unusual line breaks, so distinguish a true punctuation issue from an extraction artifact.
- Commas and periods
- Apostrophes and quotes
- Sentence boundaries
Multiple Document Languages
Select English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, or automatic detection. Choose the actual language of the passage rather than the interface language for better review context.
- Manual language choice
- Automatic detection
- Focused check modes
Which PDFs Work Best?
Use this table before assuming that every visible page contains machine-readable text.
| PDF type | What the checker can do | Best next step |
|---|---|---|
| Text-based PDF exported from an editor | Extracts the readable text in the browser and loads up to 5,000 characters for checking. | Review extraction order, run the check, then correct the editable source file. |
| Scanned or photographed document | May find no text because the page is an image rather than a selectable text layer. | Use OCR first, verify the recognized text, and then paste or upload the searchable PDF. |
| Complex columns, tables, forms, or locked PDF | Text order may be mixed, or extraction may fail when access is restricted. | Copy a specific passage manually or use the original authoring application for a layout-aware proofread. |
PDF Proofreading Limits You Should Know
A spelling result is one part of document quality. It does not validate the file's design, facts, accessibility, or legal meaning.
5,000 Characters Per Check
The existing language-check API accepts up to 5,000 characters. For a longer PDF, review the first loaded passage, then paste later sections in separate checks. Do not assume an unprocessed page has been reviewed.
No OCR for Image Scans
This page does not convert page images into text. A scanned contract, photographed worksheet, or flattened design needs OCR before the words can be checked. Always inspect OCR output for names and numbers.
No In-Place PDF Editing
Suggestions are returned as corrected text; the tool does not place edits back into coordinates, fonts, forms, or annotations. Apply changes to the source document or a PDF editor and verify the final export.
No Fact or Citation Verification
Spelling confidence is not factual accuracy. Dates, totals, citations, quotations, legal clauses, medical statements, technical units, and names need an appropriate human or authoritative review.
File Handling and Privacy
The file-reading step is local, while the text you choose to check is sent to the existing spell-check API. Use that distinction when deciding what to process.
PDF Extraction Runs in Your Browser
PDF.js reads the selected file on your device and fills the text box. The original PDF file is not uploaded to our server by this page.
Checked Text Uses the API
When you press the check button, the visible text in the editor is sent to the AI Spell Check API for processing. Remove confidential passages, personal identifiers, passwords, or protected records first.
Use a Safer Source for Sensitive Work
For privileged legal material, medical records, unreleased financial information, client data, or confidential research, use an approved offline workflow and your organization's document policy.
Learn about the open-source PDF.js browser renderer used for local extraction
Related Writing Checkers
Choose a focused tool when the source is already editable or when one type of language issue needs extra attention.
Grammar Checker
Paste editable text for a broad grammar and clarity review without PDF extraction.
Punctuation Checker
Concentrate on commas, sentence endings, quotation marks, and punctuation consistency.
Microsoft Word Spell Check Guide
Learn how to proofread and correct the editable document before exporting a new PDF.
PDF Spelling Checker FAQ
Can I spell check a PDF online for free?
Yes. Upload a text-based PDF up to 10 MB, review the extracted passage, and run a free spelling, grammar, or punctuation check. Each check accepts up to 5,000 characters.
Does the tool upload my PDF?
The original PDF is read locally in your browser and is not uploaded by this page. The extracted text visible in the editor is sent to the spell-check API only when you start a check.
Why does my scanned PDF show no text?
A scan often contains page images without a selectable text layer. Run OCR first, review the recognized text for mistakes, and then use a searchable PDF or paste the passage.
Will it fix spelling directly inside the PDF?
No. It returns a corrected text version and issue list. Apply approved corrections in the editable source or a PDF editor, then export and visually proofread the PDF again.
Can it check a long PDF?
It can extract from a long text-based PDF, but the editor loads up to 5,000 characters per check. Process later sections separately and track which pages you have reviewed.
Does it preserve columns, tables, and formatting?
No. PDF extraction focuses on text and may change reading order in complex layouts. Compare the extracted passage with the rendered page before acting on suggestions.
Which language should I choose?
Choose the language used in the PDF passage. Automatic detection is available, but selecting the language is useful for short passages, bilingual files, and regional spelling conventions.
Check the Text in Your PDF
Upload a readable PDF, inspect the extracted passage, and review language suggestions before correcting your source document.
Choose and Check a PDF