Tools
Find a tool by name, or browse images, PDF, text, developer tools, calculators and timers below.
29 tools available
Images13 tools
Crop, resize and combine images, add a watermark, create GIFs or extract text.
- Image compressorCompress JPG, PNG, and WebP images in your browser. Adjust quality and dimensions, compare file sizes, and download JPG or WebP.
- HEIC to JPGConvert one supported HEIC or HEIF photo at a time (input up to 20 MiB). Adjust quality, preview the JPG, and download it in your browser.
- Image crop and resizeCrop a still JPG, PNG, or WebP image by aspect ratio or exact coordinates, set its output dimensions, and check the result in your browser. Up to 12 megapixels.
- Merge images into one fileCombine 2–8 still JPG, PNG, or WebP images in a vertical or horizontal strip. Set the order, shared dimension, spacing, and output format in your browser.
- Add a text watermark to an imageAdd a single text watermark to a still JPG, PNG, or WebP image. Adjust its position, opacity, angle, size, and outline, then check a PNG or JPG copy in your browser.
- Pixelate or cover part of an imageSelect areas of a still JPG, PNG, or WebP image and apply a mosaic effect or solid cover. Review each edited area before saving a PNG or JPG copy in your browser.
- Pick colors from an imageSelect a point in a still JPG, PNG, or WebP image to read its HEX, RGB, and HSL values, or sample an approximate palette in your browser.
- Pixelate an imageAdd a pixel-block effect to a whole image, compare block sizes, and download a PNG. Learn why pixelation is not a privacy mask.
- Extract text from an imageExtract text from JPG, PNG or WebP images in your browser. Recognizes Traditional Chinese, Simplified Chinese and English; edit, copy or download the result as TXT.
- Make a photo collageArrange 2–16 still photos in a grid or large-image layout. Set the canvas ratio, spacing, crop, background, and output format in your browser.
- Split an image into tilesSplit one still image into up to 36 tiles. Set rows, columns, crop ratio, output width, and PNG or JPG, then download images individually or as a ZIP.
- Make a GIF from imagesTurn 2–30 still JPG, PNG, or WebP images into a GIF. Set frame timing, order, size, fit, and playback in your browser.
- Turn a sprite sheet into a GIFSplit a regular sprite sheet into frames, set their order and timing, then export a GIF or a ZIP of PNG frames in your browser.
PDF6 tools
Merge, split or rearrange PDFs, add a watermark, and convert images or PDF pages.
- Merge PDF filesCombine 2–20 PDFs into one file in your browser. Reorder files before merging, then download your PDF. Up to 200 pages and 50 MiB total.
- Split a PDFSplit one PDF by page number. Extract pages into one file, create a PDF per range, or save one file per page. Files are processed in your browser.
- JPG and PNG to PDFCombine JPG and PNG images into a PDF in your browser. Arrange and rotate them, choose A4 or image-sized pages, then download the file.
- PDF to JPGConvert each PDF page into a separate JPG. Supports files up to 20 MiB and 50 pages. Choose a resolution, preview, then download individual JPGs or a ZIP.
- PDF page organizerReorder, rotate or remove pages from one PDF in your browser. Preview thumbnails, undo changes and download a new file without uploading the original.
- Add a text watermark to a PDFAdd a one-line text watermark to all pages or a page range in one PDF. Adjust placement, color, opacity and angle, preview the result and download it in your browser.
Text2 tools
Check text length or compare two versions line by line.
- Count words and characters in your textCount characters, Han characters, English words, lines and paragraphs in your text. Compare it with a custom limit and copy the result in your browser.
- Compare text line by lineCompare two text versions line by line to find additions and removals. Whitespace is preserved, line endings are normalized, and your text stays in the browser.
Developer tools4 tools
Format JSON or create a QR code from text and URLs.
- JSON formatter and syntax validatorCheck JSON syntax, format it with 2 spaces, 4 spaces or Tab, or compact it to one line. Copy or download the result. Number tokens and key order stay as written.
- QR code generatorTurn text or a URL into a QR code, preview it, and download a 512, 1,024, or 2,048 px PNG or SVG. Input is limited to 1,000 UTF-8 bytes.
- Generate a random passwordGenerate a random password in your browser. Set 8–128 characters, choose character types, and copy the result. Check each site's password rules before using it.
- Unix timestamp converterConvert Unix timestamps in seconds or milliseconds to dates, or convert a date back to a timestamp. Choose UTC, Taipei, Tokyo or your device time zone.
Calculators2 tools
Work out percentages, percentage changes and sale prices.
- Percentage calculatorFind a percentage of a number, a part as a percentage of the total, or a percentage increase or decrease. Compare the result and copy it in your browser.
- Discount calculatorCalculate a sale price and savings, find the percentage discount from two prices, or work back to the original price. Enter discounts as percent off.
Time2 tools
Measure elapsed time or set a countdown timer.
- Online stopwatchMeasure elapsed time in your browser, pause and resume, record up to 100 laps, and copy lap and total times. Keep the page open and your device awake.
- Countdown timerSet a duration, pause and resume the countdown, and repeat it when finished. Includes sound testing and full screen. Keep the page open for the reminder.
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