Reorder PDFs, images, and PowerPoint slides, then save all or selected pages as a PDF.
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PDF & documents
15
Extract embedded images from Word, Excel, and PowerPoint files and save them as a ZIP.
Photograph paper, correct perspective, arrange pages, and adjust page size and file size to create a PDF.
Compare two PDFs to find added or removed pages and changes in appearance or text.
Large Text Print
Max Text Print
Fit and print large text on A3, A4, A5, or Letter paper.
PowerPoint Compare
PPTX Diff
Compare two PowerPoint files to review changes in content and appearance.
Comment on PDF text and regions, organize feedback, and export review reports.
PowerPoint Version Control
PPTX Version Control
Manage PowerPoint version history, differences, branches, and merges.
Connect PDF processing steps as nodes, preview intermediate results, and save reusable workflows.
Tile a large PDF or image across smaller sheets and create a PDF for assembly.
Arrange text, merged data, and codes on real-size labels and create a printable PDF.
Create exact-size PDF planner refills for monthly, weekly, daily, and note pages.
Fill PDF forms, add text, signatures, or stamps, and save a completed PDF.
Inspect and clean Office metadata, comments, and hidden information.
Convert Word, PowerPoint, Excel, PDF, and other document formats to Markdown.
Images
13
Compare image formats, quality, and resolution to adjust file size and appearance.
Photo Face Redactor
Face Redactor
Detect faces in photos and cover them with blur, pixelation, fills, and other masks.
Photo Metadata Inspector
Photo Privacy Inspector
Inspect photo GPS, capture time, and device details, then remove metadata and re-check the result.
Aligned Photo Comparison
Same Spot Diff
Align two slightly shifted photos and highlight what changed.
Single-File Photo Album
OneFile Album
Bundle multiple images and their viewer into one HTML album.
Image Sorter
Smart Image Sorter
Sort up to 500 images automatically and review uncertain results.
Match a Photo Composition
Photo Re-Enactor
Overlay a reference photo on the camera view to retake a similar composition.
Connect image-processing steps as nodes and save workflows for batch use.
Draw pixel art frame by frame and export GIFs or sprite sheets.
Embed one file in an image and recover it later from the generated PNG.
Arrange still images, adjust frame timing, and create animated GIF or WebP.
Arrange 2–20 photos, adjust crops, spacing, and background, and export one image.
Compare burst or similar photos, choose which to keep, and save the original images in ZIP files.
Video
15
Cut a selected video range without re-encoding.
Inspect codecs, bitrate, frame rate, metadata, and other details of video and audio files.
Compress video by adjusting resolution and bitrate.
Change video speed from 0.25× to 4×, choose audio and quality settings, and save an MP4.
Detect faces in video, cover them with mosaic, blur, or other masks, and save an MP4.
Arrange representative video frames into one overview image.
Video to GIF & WebP
Video to GIF / WebP
Convert a selected video range to GIF or animated WebP.
One-Second Montage
One Second Montage
Join photos and videos into a short MP4 using one second per item.
Turn PowerPoint slides into an MP4 with narration, subtitles, and background music.
Video Filter Builder
FFmpeg Filter Builder
Connect video filters as nodes, preview the result, and export a video.
Add comments and frame annotations to video moments or ranges and track feedback status.
Delayed Practice Mirror
Practice Mirror
Review movements in a delayed camera view with slow playback and frame stepping.
Manually record work-step timings from video and compare repeated cycles.
Reverse Video
Reverse Clip
Turn a selected video range into a reversed or forward-and-back MP4.
Insert spoken or drawn explanations on frozen frames and save them joined with the original video.
Audio & music
7
Practice with a tuner, metronome, recorder, and other music tools.
Trim, split, reorder, and join audio clips into one file.
Audio Cue Pad
Music Cue Pad
Load multiple audio files and play the track or sound you need from large cue buttons.
Choose an audio track from video and extract it unchanged or convert it to M4A, MP3, or WAV.
Reduce background noise in recorded speech, compare before and after, and save WAV.
Compare equal temperament and just intonation, inspect frequency and cent differences, and save WAV.
Estimate notes from short audio, correct them on a piano roll, and save MIDI or CSV.
Data & text
17
Open and inspect the contents of Parquet files.
Markdown Editor & Preview
Markdown Preview Lab
Edit Markdown while comparing GitHub-, Qiita-, and Zenn-style previews.
JSON, YAML & CSV Viewer
JSON / YAML / CSV Viewer
Open, search, analyze, and convert JSON, YAML, CSV, and related formats.
Search SQLite databases and inspect related records, cell contents, and database health.
Use 33 developer utilities for Base64, JSON, JWT, regex, hashes, and more.
Check text counts, frequent words, composition, and long sentences.
Explore and preview archive contents, then extract only the files you need.
Open DuckDB read-only to inspect structure, data, SQL, and database differences.
Inspect DBF structure, encoding, memo data, and records.
Inspect JSONL and NDJSON records, field types, and invalid lines.
Inspect ORC schema, stripes, column statistics, and data.
Inspect Arrow IPC schema, batches, dictionaries, and data.
Inspect Avro schema, blocks, logical types, and records.
Compare schemas between two data files such as Parquet, CSV, or JSONL.
Generate reproducible test data with missing, boundary, and invalid values.
Connect CSV, JSONL, and Parquet transformations as nodes and save reusable workflows.
Calibrate graph images or PDFs, extract XY data from curves or markers, and save CSV.
Measurement & calculation
7
Level & Inclinometer
Pocket Level
Use a phone's orientation sensor to check level, vertical alignment, angles, and slope.
Count people, inventory, laps, and more with large buttons for multiple counters.
Check cameras, microphones, speakers, displays, and input devices.
Phone Motion Sensors
Wireless Sensor
Record synchronized motion, vibration, and impacts with up to four phones and compare the results.
Run 80 engineering calculations with unit switching and parameter comparisons.
Count manually on images with point and rectangle markers that show what you counted.
Count directional line crossings from a camera or video, apply manual corrections, and save CSV.
Work & creation
16
Organize temporary web links and file paths with notes and retention periods.
Time focus and break sessions and keep a history of your work.
Teleprompter
Pocket Teleprompter
Paste a script and scroll it automatically by speed or target duration.
Face Check-in
Pop-up Face Check-in
Record temporary event check-ins using local face matching, name search, or manual entry.
Task Capacity Board
Task Packing
Compare task sizes against your available capacity using areas on a board.
Control a PPTX or PDF opened on your computer from a connected phone.
Check-in & Attendance
Check-in Desk
Reuse a roster to record check-ins, attendance, and entry or exit logs.
Create a TrueType font from handwriting drawn on the screen.
Build single-HTML inspection, reception, and survey forms that store responses locally.
Combine images, steps, and checklists into searchable HTML guides that you can save and edit again.
Subset TTF or OTF fonts to WOFF2 and save them with CSS.
Analyze a saved web page and package its supported local resources into one HTML file.
Issue queue numbers, manage the waiting list, display calls, and print tickets.
Loan & Return Board
Loan Board
Record equipment loans and returns and check outstanding items.
Cover answers on images to study and create HTML lessons for one-question-at-a-time review.
Serial Terminal
Web Serial Terminal
Send and receive text or HEX with serial devices in a supported browser, using macros and log export.
Everyday tools
10
Read QR codes from a camera or saved images and keep a scan history.
Full-Screen Sign
Signal Screen
Display text, arrows, colors, and QR codes full-screen.
QR File Transfer
Optical File
Turn a small file into animated QR frames and restore it from another device's camera or the generated image.
Pick names, randomize order, split teams, or run a roulette.
Check which regular items are running low and create a list of what to buy.
Date & Text Converter
Handy Convert
Convert dates, times, Japanese eras, kana, and full-width or half-width characters.
Share Wi-Fi connection details by QR code, copy, or print.
Pass one phone around to collect votes, keeping results hidden until the final reveal.
Create a round-robin schedule and manage results, remaining matches, and standings.
NFC & QR Routine Log
NFC Tap Log
Open cleaning, replacement, or inspection histories from NFC or QR tags and log completed work.
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