Why Free AI Tools Belong Next to File Converters
ConvertMastery started with privacy-first converters. The same goal applies to writing and image AI: get useful drafts and enlargements without installing desktop apps or creating an account.
AI Paraphraser / Rewriter
Use the AI Paraphraser when you need clearer wording, a more formal tone, or a simpler rewrite of the same idea.
- Paste up to about 6,000 characters.
- Choose Standard, Formal, Simple, or Creative.
- Copy the result and edit names, facts, and citations yourself.
Pair it with the Grammar Checker and Word Counter for polish and length limits.
AI Summarizer (Text + PDF Extract)
The AI Summarizer shortens long notes, articles, and PDF text.
- Paste text directly, or upload a PDF so text is extracted in your browser first.
- Choose short, medium, or detailed length.
- Scanned (image-only) PDFs need Extract Text (OCR) before summarizing.
Only extracted text is sent for summarization — not the PDF binary itself.
AI Email Writer
The AI Email Writer turns a purpose plus optional bullet points into a subject line and body draft.
- Pick professional, friendly, formal, or casual tone.
- Never send AI email blindly — verify recipients, dates, and claims.
- It does not send mail; copy into your own client.
AI Image Upscaler (2× in Your Browser)
The AI Image Upscaler enlarges JPG, PNG, or WebP about 2× using ESRGAN in the browser. Images stay on your device.
After upscaling, you may want to:
- Compress for web or email size limits
- Convert to WebP or JPG
- Test with free Sample Files
Fair Use & Privacy
AI text tools share a daily free quota per visitor. Prefer browser-local tools for highly sensitive documents. Review our Privacy Policy and Disclaimer.