yuanmotools Online Toolbox

yuanmotools keeps development, text, image, PDF, and everyday utilities in your browser. Files are processed locally by default — open a tool and start, with no account required.

• Add Audio to Video — Add or replace a video's audio track while optionally retaining the original audio.
• ASCII Table — Browse the ASCII table for control and printable characters — handy for encoding and debugging.
• ASCII Art Generator — Turn text into ASCII art with multiple font styles for signatures and decorations.
• Bar Chart — Build bar charts online from spreadsheet data, customize styles, and export as PNG or JPEG.
• Handheld Scrolling Banner — Create full-screen scrolling handheld banners with custom text for events and interactive displays.
• Base64 Encode/Decode — Encode and decode text with Base64 online for data transfer and embedded configs.
• Base Converter — Convert numbers between binary, octal, decimal, hexadecimal, and other common bases.
• Simple Calculator — A lightweight online calculator with basic arithmetic, modulo, and calculation history.
• Change Audio Speed — Speed up or slow down audio and export the result as WAV.
• Change GIF Speed — Change GIF playback speed by adjusting frame delays while preserving animation.
• Change Video Speed — Adjust video playback speed while updating the media timeline.
• Coin Flip — Flip a virtual coin for a quick heads-or-tails decision when you only have two options.
• Color Palette — Browse curated color palettes and copy values with one click for design and frontend work.
• Color Picker — Pick a color and convert between HEX, RGB, HSL, CSS names, and other common formats.
• Image Compressor — Compress PNG, JPEG, WebP, and other images locally with format-aware quality and size controls.
• Compress PDF — Choose lossless, balanced, or strong compression; resampled modes flatten page structure.
• Compress Video — Use WebCodecs to lower video bitrate or dimensions, preferring MP4 with WebM fallback.
• Create Transparent PNG — Select a target color and turn similar pixels into transparent areas.
• Crop Images — Crop images using exact coordinates, dimensions, or common aspect ratios.
• Crop Video — Crop a video frame to an exact pixel rectangle and re-encode the result.
• CSS Formatter / Minifier — Format or minify CSS online to normalize structure for review and shipping.
• Decision Helper — Add your own options and get a random pick when you can’t decide what to do or where to go.
• Dice Roller — Roll virtual dice online with a customizable count for games, draws, and random points.
• Text Diff — Compare two texts or code snippets side by side with clear diffs for Chinese and English.
• Document Copy Layout — Arrange both sides of an ID card or up to four document images on A4, then export JPG and a single-page PDF.
• Emoji Gallery — Browse emoji by category and click to copy for chat, documents, and social posts.
• Extract Audio from Video — Read the primary audio track from a video and convert it to WAV.
• Extract Images from PDF — Extract embedded bitmap resources from PDF pages and package multiple results as ZIP.
• Flip Video — Mirror video frames horizontally or vertically.
• Hash Calculator — Compute MD5, SHA-family, and HMAC digests for integrity checks and signature material.
• HTML Entity Escape — Convert between HTML and entity escapes so special characters display correctly.
• HTML Formatter — Format HTML and XML online with clearer indentation for reading and debugging.
• HTTP Status Codes — Look up HTTP status codes with names and meanings to interpret API and page responses quickly.
• Image OCR — Recognize English or Chinese text from images locally in the browser.
• Adjust Image Opacity — Adjust whole-image opacity and export the result as a transparent PNG.
• Poster Page Splitter — Tile a large image across A4 or other paper sizes and create a printable PDF.
• Image Color Picker — Upload an image and click to sample colors in HEX, RGB, or HSL for design reference.
• Images to PDF — Sort PNG, JPEG, WebP, or HEIC images and create a PDF with paper and scaling controls.
• Image Watermark — Add custom text watermarks with adjustable position, size, opacity, and color, then download.
• Image Splitter — Split images into grids such as 2×2 or 3×3, or set custom rows and columns for collage posts.
• JPG to PNG — Batch-convert JPG and JPEG images to PNG at their original pixel dimensions.
• JS Formatter / Minifier — Format, minify, or obfuscate JavaScript online to tidy source and reduce size.
• JSON Editor — Edit and preview JSON online with highlighting, validation, formatting, minification, and escape helpers.
• JWT Decoder — Decode JWTs and inspect Header and Payload claims for authentication debugging.
• Line Chart — Build line charts online for time-series and trend analysis, with spreadsheet editing and image export.
• Loop Video — Repeat video content a selected number of times into one continuous file.
• Lottery Draw — Enter options and randomly draw one or more results, with controls for count and duplicates.
• M3U8 Player — Play m3u8 (HLS) streams online by pasting a URL for live and VOD playback checks.
• Markdown Editor — Write Markdown online with live preview — useful for drafting docs and notes quickly.
• MD5 Hash Online — Hash text to MD5 digests with 32-bit or 16-bit output in upper or lower case for checksums and fingerprints.
• Merge Audio — Decode and concatenate multiple audio files in order, then export WAV.
• Merge PDF — Drag, sort, and merge multiple PDF files locally into one document.
• Merge Videos — Normalize and concatenate multiple videos in queue order into one file.
• Morse Code — Convert between plain text and Morse code, with support useful for learning and playful encoding.
• Number to Chinese Amount — Convert Arabic amounts to Chinese uppercase numerals for invoices, contracts, and finance writing.
• PDF Editor — Manage pages, forms, annotations, and signatures; original objects are editable only when verified safe.
• PDF to EPUB — Extract text from digitally generated PDFs and create a reflowable EPUB ebook.
• PDF to PNG — Render PDF pages to PNG and package multi-page results as a ZIP file.
• Pie Chart — Build pie charts online to show category share, with spreadsheet editing and image export.
• Pomodoro Timer — A Pomodoro timer with customizable focus and break lengths to keep a steady work rhythm.
• Protect PDF — Use QPDF WASM to apply AES passwords and printing, modification, and extraction permissions.
• QR Code Generator — Generate QR codes from text or URLs with custom size, error correction, colors, and optional logo.
• Random Number Generator — Generate random integers within a custom range for raffles, roll calls, and fair picks.
• Random Password Generator — Generate strong random passwords online with custom character sets, length, and bulk creation.
• Reaction Speed Test — Click as soon as the box changes color to measure reaction time with history and stats.
• Regex Tester — Test regular expressions against sample text with common flags and pattern references.
• AI Background Remover — Use a self-hosted MODNet model to isolate the subject and create a transparent PNG.
• Replace Image Color — Replace image pixels by target color and tolerance, ideal for icons and flat artwork.
• Resize Images — Resize images by pixels, percentage, or longest edge while preserving aspect ratio.
• Rock Paper Scissors — Play rock-paper-scissors against the computer with live outcomes and running stats.
• Rotate Images — Rotate images by 90, 180, 270 degrees, or a custom angle.
• Rotate PDF — Rotate all or selected PDF pages while retaining the original document structure.
• Rotate Video — Rotate video frames by 90, 180, or 270 degrees and export a new file.
• Number Base Converter — Convert numbers between bases from 2 to 64 for learning and programming calculations.
• Scatter Plot — Build scatter plots online to explore correlation and distribution, with export to PNG or JPEG.
• Online Image Editor — Edit images online with crop, annotate, filters, brush, rotate, text, and resize tools.
• Split PDF — Split or extract PDF pages using page numbers and range expressions.
• SQL Formatter — Beautify or minify SQL online with configurable indent size for clearer queries.
• Storage Unit Converter — Convert among bit, B, KB, MB, GB, TB, PB, and EB to estimate storage capacity quickly.
• Rich Text Editor / HTML Export — Edit rich text online with live HTML preview and export when you need formatted markup.
• Remove Duplicate Lines — Remove duplicate lines from text in one click for lists, logs, and bulk cleanup.
• Text Replace — Batch-replace text with plain strings or regex, with optional case sensitivity.
• Text to Image — Convert rich text into images or long screenshots with custom width and background export.
• Text Processing Workflow — Chain text-processing steps into a workflow and run them in order for batch tasks.
• Timestamp Converter — Convert between Unix timestamps and human-readable date/time, or fetch the current timestamp for logs and APIs.
• Trim Audio — Extract an audio time range and export a broadly compatible WAV file.
• Trim Video — Extract a precise video segment using start and end times.
• Unicode Converter — Convert between Unicode escape sequences and Chinese text when fixing display issues or debugging escapes.
• Unit Converter — Convert common units for length, area, weight, time, temperature, pressure, heat, and power.
• Area Unit Converter — Convert area units across international, traditional Chinese, and imperial systems.
• Heat/Energy Unit Converter — Convert heat and energy units such as Wh, kWh, J, and kJ.
• Length Unit Converter — Convert length units across international, traditional Chinese, and imperial systems.
• Power Unit Converter — Convert power units such as W, mW, kW, MW, and GW.
• Pressure Unit Converter — Convert pressure units such as Pa, kPa, hPa, MPa, bar, torr, and psi.
• Temperature Unit Converter — Convert temperature units such as Celsius, Fahrenheit, and Kelvin.
• Time Unit Converter — Convert common international time units such as seconds, minutes, hours, and days.
• Weight Unit Converter — Convert weight units across international, traditional Chinese, and imperial systems.
• URL Encode/Decode — Encode and decode URLs online so Chinese, spaces, and special characters pass safely in query strings.
• UUID Generator — Generate UUIDs in bulk for database keys, request tracing IDs, and other unique identifiers.
• Video to GIF — Sample frames from a video segment and create a GIF with time, size, and frame-rate controls.
• Spin Wheel — Customize a spin wheel and randomly pick a result with animation for raffles and fun decisions.
• Word Cloud Generator — Generate word clouds from text with custom shape, colors, and font-size range for keyword visualization.
• Word Count — Count characters, Chinese characters, punctuation, digits, and letters to gauge writing length.
• Word Frequency Counter — Count word frequencies with a configurable minimum length for keyword extraction.
• XML Formatter — Beautify or minify XML online with configurable indent size for clearer structure.