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Compress PDFs, convert images, generate QR codes, and more — all in your browser. Free, no sign-up required.
All Tools
PDF Editing
PDF Compressor
Reduce PDF file size while preserving quality. Perfect for email attachments and uploads.
PDF Merger
Combine multiple PDF files into one document. Drag and drop to reorder pages.
PDF Splitter
Split a PDF into separate files. Extract specific page ranges with ease.
PDF Rotator
Rotate PDF pages by 90°, 180°, or 270°. Fix page orientation from scanned documents.
PDF Password Manager
Set or remove passwords on PDF files. All processing happens in your browser for full security.
PDF to Markdown Converter
Convert PDF content to Markdown format. Auto-detects headings, tables, and lists — ideal for RAG and AI workflows.
Convert from PDF
PDF to JPG Converter
Convert PDF pages to high-quality JPG or PNG images. Adjustable resolution with ZIP download.
PDF to WebP Converter
Convert PDF pages to lightweight WebP images. Higher compression than JPG with excellent quality.
PDF to PNG Converter
Convert PDF pages to lossless PNG images. Transparency support with no quality loss.
Image to Image
HEIC to JPG Converter
Convert iPhone HEIC photos to JPG or PNG. Batch conversion for easy sharing on any platform.
WebP Converter
Convert images to WebP or WebP to JPG/PNG. Reduce file size with modern web-optimized format.
PNG ⇔ JPG Converter
Convert between PNG and JPG formats. Adjust quality and handle transparent backgrounds.
Image to PDF
JPG to PDF Converter
Convert JPG, PNG, and WebP images to PDF. Combine multiple images into a single PDF file.
PNG to PDF Converter
Convert PNG images to PDF with transparency support. Batch convert and merge into one PDF.
WebP to PDF Converter
Convert WebP images to universally compatible PDF format. Batch convert and merge supported.
Image to PDF Converter
Convert JPG, PNG, WebP, GIF, and BMP images to PDF. Merge multiple images into one document.
Image Editing
Image Compressor
Compress JPEG, PNG, WebP, and HEIC images. Adjust quality, remove Exif data, and convert formats.
Image Resizer
Resize images to exact dimensions. Includes presets for social media covers and ID photos.
Image Cropper
Crop images with freehand selection, fixed aspect ratios, or social media presets.
Image Blur & Mosaic
Apply mosaic, blur, or black-out effects to hide sensitive areas. Brush and rectangle selection tools.
Image Fill & Paint
Fill areas and paint on images with bucket fill, brush, and eyedropper tools. Copy HEX/RGB color codes.
Character Counter
Count characters, words, lines, and bytes in real time. Great for social media posts and reports.
Fullwidth / Halfwidth Converter
Convert between fullwidth and halfwidth characters. Also supports katakana-hiragana conversion for data cleanup.
JSON Formatter & Validator
Pretty-print or minify JSON data. Catch syntax errors instantly with line numbers and tree view.
Text Diff Checker
Compare two texts side by side and highlight every difference. Character-level detection with merge support.
Japanese Era Converter
Convert between Western calendar years and Japanese era names (Reiwa, Heisei, Showa). Includes age calculator.
Password Generator
Generate strong, random passwords instantly. Customize length, character types, and check strength.
CSV Encoding Converter
Fix CSV character encoding issues. Convert between Shift_JIS and UTF-8 to resolve garbled text in Excel.
CSV to Excel Converter
Convert CSV files to Excel (.xlsx) format. No character encoding issues, with auto column width.
CSV Viewer
View CSV files as readable tables in your browser. Auto-detects encoding with sort and filter support.
Excel to CSV Converter
Convert Excel files (.xlsx/.xls) to CSV or TSV. Choose sheets, encoding, and line endings.
TSV ⇔ CSV Converter
Switch between TSV and CSV formats with one click. Auto-detects encoding for seamless conversion.
Digital Stamp Creator
Create digital stamps (hanko) for business documents. Round, square, and oval shapes with transparent PNG output.
Resume Builder
Build a JIS-standard Japanese resume (rirekisho) with PDF export. Your data stays in your browser.
QR Code Generator
Generate QR codes from URLs or text. Customize colors, add logos, and download instantly.
Markdown to Slack Converter
Convert Markdown text to Slack mrkdwn format. Preserve bold, links, and code blocks when pasting into Slack.
Latest Articles
All articlesJapanese Era Notation Rules for Business Documents | Wareki vs. Western Calendar
Learn when to use Japan's traditional era calendar (wareki) versus the Western calendar (seireki) in business documents. A guide covering contracts, invoices, resumes, and more.
How to Calculate Your Age from Birth Year | Japanese Era & Western Calendar Reference Table
Learn how to calculate age from a birth year in Japan's wareki or Western calendar. Includes a 2026 age reference table for Reiwa, Heisei, and Showa, plus school enrollment and graduation years.
Japanese Era Names Explained: Reiwa, Heisei, Showa, Taisho, Meiji — Complete Timeline
A complete overview of Japan's five modern era names — Reiwa, Heisei, Showa, Taisho, and Meiji. Covers dates, durations, historical events, and easy conversion formulas.
Reiwa to Western Year Conversion Table [2019–2030]
A quick-reference table for converting between Japan's Reiwa era and Western calendar years. Covers Reiwa Gannen (2019) through Reiwa 12 (2030), with an easy formula and common lookups.
Best Japanese Era Converter Tools Compared (2026) | Free Options
A comparison of free Japanese era conversion tools (wareki ↔ seireki). Covers features, usability, and supported date ranges to help you choose the right tool for your needs.
Japanese Era ↔ Western Year Quick-Reference Table [2026 Edition]
A complete quick-reference table for converting between Japan's wareki (era calendar) and Western years. Covers Reiwa, Heisei, Showa, Taisho, and Meiji with ages as of 2026. Perfect for resumes and official documents.
Why sakutto?
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Privacy First
Files are processed entirely in your browser and never leave your device. Some AI-powered tools may require server processing — we always let you know upfront.
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Japan-Friendly
Intuitive Japanese UI with tools tailored for Japan-specific needs, like full-width/half-width character conversion and Japanese era date lookup.