How-To Guides20 guides
Step-by-step guides for common file processing tasks. Each guide uses browser-only tools to achieve your goal safely.
- Organize PDFs for Tax Filing
Merge, clean up, and compress tax filing PDFs for free. Files are processed entirely in your browser and never uploaded. Perfect for e-Tax attachments.
- Check Images Before Posting to SNS
Check EXIF, GPS location, and QR code risks before posting to SNS. Remove metadata and compress — all in your browser, no uploads.
- Extract Thumbnails and Audio from Video
Trim video, extract a thumbnail frame, and save audio as MP3 — all without any video editing software, directly in your browser.
- Redact PDFs Before Submitting or Sharing
Redact names, addresses, and account numbers in PDFs before submitting or sharing. All processing stays in your browser — safe for confidential documents.
- Stamp a PDF with a Custom Seal
Create a seal stamp image and paste it into a PDF with Ctrl+V — all in your browser. Files never leave your device.
- Organize Job-Hunting Documents as PDF
Convert resumes, CVs, and ID photos to PDF, merge documents, and remove photo backgrounds — free, all in your browser. Perfect for job-hunting document prep.
- Redact Real Estate Contracts Before Submission
Redact account numbers, seal impressions, and personal data in real estate contracts before submission. All processing in your browser — no cloud upload.
- Create a Restaurant Menu PDF from Images
Create a restaurant menu PDF from food photos and menu images for free. Resize, convert, and organize pages — all in your browser, no app required.
- Digitally Save Business Card Photos and Remove EXIF
Photograph business cards, crop, remove EXIF data, and convert to PDF. Digitize contact information safely without uploading to any server.
- Digitize Receipts by Camera and Convert to PDF
Photograph receipts, crop, convert to PDF, and merge multiple pages — free, in your browser. Perfect for expense reports and tax filing attachments.
- Redact Confidential Data from Internal Reports Before Distribution
Redact names, figures, and sensitive content from internal reports and meeting minutes before distribution. All processing in your browser — no cloud upload for confidential docs.
- Compress Scanned Document PDFs for Easy Sharing
Compress large scanned PDFs from scanners or multifunction printers for free. Meet email attachment limits and e-submission size caps — all in your browser.
- Remove Background from Profile or ID Photos with AI
AI automatically removes backgrounds from portrait and ID photos. Create transparent cutouts for ID photos or SNS profiles — free, in your browser, no cloud.
- Convert iPhone HEIC Photos to JPEG for Easy Sharing
Convert iPhone HEIC photos to JPEG so they open on Windows, Android, and anywhere else. Browser-only processing — no upload needed.
- Unlock a Password-Protected PDF for Editing or Sharing
Enter the password to remove restrictions from a locked PDF. Unlock printing, editing, and text copying, then continue with annotations or compression — all in your browser.
- Extract Audio from Meeting Recordings for Transcription
Trim the relevant portion of a Zoom or Teams recording and extract the audio as MP3. Ideal for preparing input files for external transcription services — browser only.
- Create a Square Profile Icon for SNS
Crop, resize, and compress a portrait photo into a square profile icon for X, Instagram, LINE, Slack, and more — all in your browser.
- Split a Large PDF by Chapter or Section for Distribution
Split large manuals, reports, or handouts by page range and compress each part for easy distribution. Browser-only — no upload needed.
- Format, Validate, and Diff JSON API Responses
Prettify minified JSON for readability, validate syntax errors, and visually diff two JSON responses — all in your browser, no setup needed.
- Convert PDF Pages to Images for Web or Slide Use
Convert each page of a PDF to PNG or JPEG. Use the images in presentations, websites, blogs, or SNS posts — all in your browser, no upload.