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Image Compressor
Compress JPG, PNG, WebP, and AVIF images locally with quality control.
Opentoolbox.mom
All Tools
Quiet utilities for text, time, PDF, video, daily brain games, and household tasks, available without signing in.
Popular
Image Crop
Upload an image, adjust the crop frame, and export the selected area.
OpenLive
Nine Grid Split
Split an image into nine equal tiles for social grids.
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Image Flip
Flip images horizontally or vertically.
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Image Rotate
Rotate images by common angles and export a clean copy.
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Resize Photo
Resize photos by width and height.
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Image Watermark
Add text watermarks with size and opacity controls.
OpenLive
Text to Image
Turn short copy into a clean shareable image.
OpenLive
Photo Info
Read image size, file details, and common metadata.
OpenLive
ID Photo Background
Replace a simple solid portrait background with a standard color.
OpenLive
ID Photo Size
Fit a portrait into common ID photo dimensions.
OpenPopular
QR Code Generator
Create styled QR codes for URLs, text, email, SMS, Wi-Fi, and vCards.
OpenLive
QR Code Reader
Read QR code content from an uploaded image.
OpenLive
Image to SVG
Wrap a raster image in an SVG container.
OpenLive
PDF to Images
Open the PDF tool to export pages as images.
OpenLive
Images to PDF
Open the PDF tool to merge images into one PDF.
OpenLive
Compress PDF
Open the PDF tool to reduce document file size.
OpenLive
PDF Editor
Open the PDF page manager for page edits and ordering.
OpenLive
GIF to Frames
Extract animated GIF frames as PNG images.
OpenLive
Make GIF
Create an animated GIF from multiple images.
OpenLive
PNG to GIF
Convert PNG to GIF.
OpenPopular
Image Format Converter
Convert images between PNG, JPG, WebP, GIF, SVG, XBM, and WBMP.
OpenLive
JPG to PNG
Convert JPG to PNG.
OpenLive
JPG to GIF
Convert JPG to GIF.
OpenLive
JPG to WBMP
Convert JPG to monochrome WBMP.
OpenLive
JPG to XBM
Convert JPG to XBM text bitmap.
OpenLive
JFIF to JPG
Convert JFIF files to JPG.
OpenLive
PNG to JPG
Convert PNG to JPG.
OpenLive
PNG to WBMP
Convert PNG to monochrome WBMP.
OpenLive
PNG to XBM
Convert PNG to XBM text bitmap.
OpenLive
PNG to WebP
Convert PNG to WebP.
OpenLive
JPG to WebP
Convert JPG to WebP.
OpenLive
GIF to WebP
Convert a GIF frame to WebP.
OpenNew
Doodle Board
Draw a quick sketch and download it as PNG.
OpenNew
Image OCR
Use the browser OCR API when available to detect image text.
OpenLive
Rounded Corners
Apply rounded corners to an image.
OpenLive
Image Color Picker
Extract a compact color palette from an uploaded image.
OpenNew
Avatar Badge Maker
Create a polished round avatar with a simple corner badge.
OpenLive
Signature Extractor
Remove light paper backgrounds from signature images.
OpenLive
Black White Cutout
Turn high-contrast artwork into a transparent cutout.
OpenLive
Grayscale Image
Convert an image to grayscale.
OpenLive
WebP to PNG
Convert WebP to PNG.
OpenLive
WebP to JPG
Convert WebP to JPG.
OpenLive
WebP to GIF
Convert WebP to GIF.
OpenLive
AVIF to PNG
Convert AVIF to PNG in supported browsers.
OpenLive
AVIF to JPG
Convert AVIF to JPG in supported browsers.
OpenLive
TIFF to PNG
Convert TIFF pages to PNG images.
OpenLive
TIFF to JPG
Convert TIFF pages to JPG images.
OpenLive
TIFF Split
Split a multi-page TIFF into PNG images.
OpenNew
Radar Chart Maker
Generate a clean radar chart image.
OpenNew
Line Chart Maker
Generate a clean line chart image.
OpenNew
Scatter Chart Maker
Generate a clean scatter chart image.
OpenNew
Bar Chart Maker
Generate a clean bar chart image.
OpenNew
Pie Chart Maker
Generate a clean pie chart image.
OpenNew
Placeholder Image
Create a minimal placeholder image with custom size and text.
OpenPopular
Text to Speech
Read text aloud with the browser speech engine, with rate control and playback actions.
OpenLive
Simplified and Traditional
Convert common Chinese characters locally for quick copy and title cleanup.
OpenLive
Text Diff
Compare two blocks line by line and mark additions, removals, and unchanged text.
OpenLive
Chinese to Pinyin
Convert common Chinese characters to pinyin while preserving unmatched characters.
OpenLive
Stylized Text
Switch between plain text and a playful text variant for lightweight social writing.
OpenLive
Remove Duplicate Lines
Remove repeated lines while preserving order, with trim and case options.
OpenNew
Hidden Text
Embed a short message with zero-width characters or extract one from carrier text.
OpenPopular
Unix Timestamp Converter
Convert epoch timestamps in seconds, milliseconds, microseconds, and nanoseconds to readable dates.
OpenLive
Epoch Clock
Watch the current Unix time update live in seconds and milliseconds.
OpenLive
Date String Parser
Parse ISO, RFC, and common date strings into local time, UTC, and Unix timestamps.
OpenLive
Start and End Time
Get the start and end timestamps for a selected year, month, or day.
OpenLive
Seconds Duration Converter
Convert seconds into days, hours, minutes, and seconds for quick duration checks.
OpenLive
Time Zone Converter
Compare one instant across UTC, local time, and common world time zones.
OpenNew
Date Difference Calculator
Calculate the difference between two dates in days, hours, minutes, and seconds.
OpenNew
Shelf Life Calculator
Calculate a best-before date from a production date and shelf life.
OpenNew
Week and Day Number
Find the ISO week number and day-of-year number for any date.
OpenPopular
PDF to Word
Convert PDF documents into editable Word files while preserving structure where possible.
OpenPopular
PDF to Excel
Extract tabular PDF content into spreadsheet-friendly Excel files.
OpenLive
PDF to HTML
Turn PDF pages into shareable HTML while keeping layout and visual hierarchy.
OpenLive
PDF to Images
Export PDF pages as images or as a continuous long image.
OpenPopular
PDF to PPT
Convert PDF decks and reports into editable presentation files.
OpenLive
PDF Watermark
Add custom text or image watermarks with position, opacity, and rotation controls.
OpenLive
Compress PDF
Reduce PDF file size for faster sharing and lighter storage.
OpenNew
PDF Signature
Place a signature on PDF documents for lightweight review and approval workflows.
OpenLive
Images to PDF
Merge JPG, PNG, screenshots, and scanned images into a single PDF.
OpenPopular
Split PDF
Extract selected pages or page ranges into a new PDF.
OpenPopular
Merge PDF
Combine pages from multiple PDFs into one organized document.
OpenLive
Image-only PDF
Convert PDF pages into image-only pages to reduce casual copying and editing.
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PDF Page Manager
Add, remove, rotate, and reorder PDF pages in a focused workspace.
OpenLive
Extract PDF Images
Extract illustrations, photos, charts, and other image assets from PDF files.
OpenLive
PDF Password
Add or remove PDF password protection for controlled document sharing.
OpenNew
Crop PDF Pages
Crop page margins or content areas across PDF pages.
OpenNew
Edit PDF Metadata
Edit title, author, subject, keywords, and creator metadata.
OpenNew
Add PDF Page Numbers
Add page numbers to PDFs for reports, papers, ebooks, and document packets.
OpenNew
Resize PDF Pages
Resize PDF pages to common paper sizes such as A3, A4, and letter.
OpenLive
Jianying Watermark Remover
Upload a video, mark the watermark area, and export a processed file.
OpenLive
Color Converter
Convert HEX, RGB, and HSL values into clean developer-ready color formats.
OpenLive
JSON Diff
Compare two JSON payloads and list changed, added, and removed paths.
OpenLive
JSON Validator
Validate JSON instantly and format it into a readable structure.
OpenLive
MD5 Hash
Generate MD5 hashes locally for checksums and legacy integrations.
OpenLive
Unicode Encoder Decoder
Encode plain text as Unicode escapes or decode escapes back to readable text.
OpenLive
URL Encoder Decoder
Encode and decode URL components without sending content to a server.
OpenLive
JSON Formatter
Beautify compact JSON and minify formatted JSON for transport.
OpenLive
AES Encrypt Decrypt
Encrypt and decrypt text locally with password-based AES-GCM.
OpenLive
URL Parser
Break a URL into protocol, host, path, query parameters, and hash.
OpenLive
Random Password Generator
Generate strong local passwords with length and character-set controls.
OpenLive
Base64 Encoder Decoder
Encode Unicode text as Base64 or decode Base64 back to text.
OpenNew
Markdown Editor
Draft Markdown and preview headings, emphasis, links, lists, and code blocks.
OpenLive
Regex Tester
Test JavaScript regular expressions and inspect every match.
OpenNew
YAML JSON Converter
Convert JSON to readable YAML and parse simple YAML maps back to JSON.
OpenLive
User-Agent Tool
Read and lightly parse the current browser User-Agent string.
OpenNew
Hello World Generator
Generate Hello World snippets for common programming languages.
OpenLive
UUID Generator
Generate RFC 4122 style UUID values locally in the browser.
OpenNew
Internet Speed Test
Measure download speed, upload speed, latency, and jitter in the browser.
OpenNew
Schulte Grid
Tap numbers in order to warm up attention and visual search speed.
OpenNew
Number Memory
Memorize a short number, then type it back as the length grows.
OpenNew
Stroop Color Challenge
Pick the ink color, not the word meaning, against a quick timer.
OpenNew
N-back Memory
Compare the current card with the one N steps back for working-memory practice.
OpenNew
Pattern Memory Grid
Watch highlighted tiles, then reproduce their positions on the grid.
OpenNew
Mental Math Sprint
Solve as many small arithmetic questions as you can before time runs out.
OpenNew
Find the Target
Find the odd symbol in a dense grid before the next round.
OpenNew
Dynamic Visual Tracking
Remember marked targets, follow them while they swim, then point them out.
OpenNew
Sequence Completion
Find the next number in lightweight logic sequences.
OpenNew
Word Scramble
Rebuild a word or idiom from shuffled character tiles.
OpenNew
Mini Sudoku
Solve 4x4, 6x6, or 9x9 sudoku boards by difficulty.
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