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Online tools

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167 tools · 10 categories

Categories

Images53 toolsResize, compress and convert common image formats without uploading your photos.Data & spreadsheets14 toolsClean, validate and convert CSV and JSON files with precise, practical utilities.Developer utilities12 toolsUseful everyday helpers for file verification, URLs, JSON, and encoding.Text tools34 toolsCount, format and clean text directly in your browser.Audio tools19 toolsTrim, normalize, reverse and turn supported audio into WAV.Video tools8 toolsExtract frames, make contact sheets and trim clips to WebM in compatible browsers.PDF creation5 toolsTurn photos and pictures into downloadable PDF documents.Game save tools3 toolsInspect and edit supported local game saves with backup downloads.Link utilities3 toolsDownload direct public media files where the host permits cross-origin access.Calculators16 toolsImage sizes, aspect ratios, video bitrates, transfer times, and storage units.

Common tools

Resize an imageChange an image’s pixel width and height. Preserve aspect ratio or enter exact dimensions; export as PNG, JPG or WebP.Images Convert PNG to JPGConvert a PNG picture into a JPG image locally in your browser, then download the result.Images Compress an imageReduce an image’s file size by choosing JPEG or WebP quality, or targeting a maximum size in KB.Images Trim MP3 audio to WAVTrim part of an MP3 file and download it as WAV.Audio tools Merge images into one PDFCombine multiple local pictures into a multi-page PDF. Each page is sized to the selected image.PDF creation Extract PNG frame from videoExtract one frame from a compatible video as a PNG image.Video tools CSV to JSONConvert a comma-separated table into a formatted JSON array with column headers as object keys.Data & spreadsheets JSON game save editorEdit a readable JSON-format game save and export a validated JSON file.Game save tools SHA-256 file checksumCalculate the SHA-256 fingerprint of a local file for integrity checking.Developer utilities Aspect ratio calculatorReduce pixel dimensions to a width-to-height ratio.Calculators

Tool directory

167 results
Aspect ratio calculatorReduce pixel dimensions to a width-to-height ratio.Calculators Aspect ratio resizerCalculate a proportional image height for a specified new width.Calculators Pixels to inches converterConvert image pixels to inches or centimeters at a specified PPI.Calculators Print resolution (PPI) calculatorCalculate pixels per inch for a chosen print size.Calculators Image megapixel calculatorCalculate megapixels from image width and height.Calculators Video file size calculatorEstimate the size of a video from bitrate and duration.Calculators Video bitrate calculatorEstimate video bitrate needed for a target size and duration.Calculators Download time calculatorEstimate download time from file size and network speed.Calculators Upload time calculatorEstimate upload time from file size and network speed.Calculators Audio file size calculatorEstimate compressed audio size using bitrate and duration.Calculators WAV file size calculatorEstimate uncompressed audio storage from sample rate, channels and duration.Calculators File compression ratio calculatorCalculate the percentage saved when compressing a file.Calculators Percentage change calculatorCalculate percentage increase or decrease between two values.Calculators Video frames to timecodeConvert a frame count and integer FPS into a non-drop timecode.Calculators Seconds to timecodeConvert a duration in seconds into hours, minutes, seconds, and milliseconds.Calculators MB to MiB converterConvert decimal megabytes to binary mebibytes and related storage units.Calculators Convert JPG to PNGConvert a JPG picture into a PNG image locally in your browser, then download the result.Images Convert JPG to WebPConvert a JPG picture into a WebP image locally in your browser, then download the result.Images Convert PNG to JPGConvert a PNG picture into a JPG image locally in your browser, then download the result.Images Convert PNG to WebPConvert a PNG picture into a WebP image locally in your browser, then download the result.Images Convert WebP to PNGConvert a WebP picture into a PNG image locally in your browser, then download the result.Images Convert WebP to JPGConvert a WebP picture into a JPG image locally in your browser, then download the result.Images Convert GIF to PNGConvert a GIF picture into a PNG image locally in your browser, then download the result.Images Convert GIF to JPGConvert a GIF picture into a JPG image locally in your browser, then download the result.Images Convert GIF to WebPConvert a GIF picture into a WebP image locally in your browser, then download the result.Images Convert JFIF to PNGConvert a JFIF picture into a PNG image locally in your browser, then download the result.Images Convert JFIF to JPGConvert a JFIF picture into a JPG image locally in your browser, then download the result.Images Convert JFIF to WebPConvert a JFIF picture into a WebP image locally in your browser, then download the result.Images Convert AVIF to PNGConvert a AVIF picture into a PNG image locally in your browser, then download the result.Images Convert AVIF to JPGConvert a AVIF picture into a JPG image locally in your browser, then download the result.Images Convert AVIF to WebPConvert a AVIF picture into a WebP image locally in your browser, then download the result.Images Convert BMP to PNGConvert a BMP picture into a PNG image locally in your browser, then download the result.Images Convert BMP to JPGConvert a BMP picture into a JPG image locally in your browser, then download the result.Images Convert BMP to WebPConvert a BMP picture into a WebP image locally in your browser, then download the result.Images Convert SVG to PNGConvert a SVG picture into a PNG image locally in your browser, then download the result.Images Convert SVG to JPGConvert a SVG picture into a JPG image locally in your browser, then download the result.Images Convert SVG to WebPConvert a SVG picture into a WebP image locally in your browser, then download the result.Images Convert ICO to PNGConvert a ICO picture into a PNG image locally in your browser, then download the result.Images Convert ICO to JPGConvert a ICO picture into a JPG image locally in your browser, then download the result.Images Convert ICO to WebPConvert a ICO picture into a WebP image locally in your browser, then download the result.Images Crop imageCrop a selected image to a specified rectangle or centered aspect ratio. Processing stays in your browser.Images Rotate image 90°Rotate a picture 90 degrees clockwise. Processing stays in your browser.Images Rotate image 180°Turn a picture upside down by rotating it 180 degrees. Processing stays in your browser.Images Rotate image 270°Rotate a picture 90 degrees counterclockwise. Processing stays in your browser.Images Flip image horizontallyMirror an image left to right. Processing stays in your browser.Images Flip image verticallyMirror an image from top to bottom. Processing stays in your browser.Images Make image grayscaleConvert a color image to grayscale. Processing stays in your browser.Images Invert image colorsInvert all picture colors while retaining alpha transparency. Processing stays in your browser.Images Apply sepia image filterTurn an image into a warm brown sepia photograph. Processing stays in your browser.Images Convert image to black and whiteMake a pure black and white thresholded image. Processing stays in your browser.Images Blur imageApply adjustable blur to a photograph. Processing stays in your browser.Images Pixelate imageCreate an adjustable pixel mosaic effect. Processing stays in your browser.Images Adjust image brightnessBrighten or darken a picture. Processing stays in your browser.Images Adjust image contrastIncrease or decrease picture contrast. Processing stays in your browser.Images Adjust image saturationBoost or reduce colors in a photograph. Processing stays in your browser.Images Add text watermark to imageOverlay custom semi-transparent watermark text onto an image. Processing stays in your browser.Images Round image cornersCreate a PNG with transparent rounded corners. Processing stays in your browser.Images Make square imagePlace an image on a square canvas without cropping. Processing stays in your browser.Images Create ICO favicon from imageMake a 32×32 icon file from a picture for websites. Processing stays in your browser.Images Extract dominant image colorsExtract the dominant colors from an image as HEX swatches. Processing stays in your browser.Images Convert image to Base64Get a Base64 data URL for a local image. Processing stays in your browser.Images Convert JPG to ICO faviconConvert a JPG image into a downloadable 32×32 ICO favicon.Images Convert PNG to ICO faviconConvert a PNG image into a downloadable 32×32 ICO favicon.Images Convert WEBP to ICO faviconConvert a WEBP image into a downloadable 32×32 ICO favicon.Images Convert GIF to ICO faviconConvert a GIF image into a downloadable 32×32 ICO favicon.Images Convert BMP to ICO faviconConvert a BMP image into a downloadable 32×32 ICO favicon.Images Convert SVG to ICO faviconConvert a SVG image into a downloadable 32×32 ICO favicon.Images Sort text linesSort text lines alphabetically by their contents.Text tools Sort text lines numericallySort lines by their numeric values.Text tools Reverse line orderReverse the order of newline-separated text.Text tools Reverse textReverse text by Unicode characters.Text tools Trim spaces from every lineRemove leading and trailing whitespace from each line.Text tools Remove blank linesRemove empty and whitespace-only lines.Text tools Normalize whitespaceCollapse repeated whitespace while keeping words readable.Text tools Find and replace textReplace an exact string throughout your text.Text tools URL slug generatorConvert a title into a URL-friendly slug.Text tools ROT13 text converterApply reversible ROT13 substitution to English letters.Text tools UTF-8 text to hexadecimalEncode Unicode text into hexadecimal UTF-8 bytes.Text tools Hexadecimal to UTF-8 textDecode hexadecimal bytes into Unicode UTF-8 text.Text tools UTF-8 text to binaryWrite every UTF-8 byte as 8 binary digits.Text tools Binary to UTF-8 textDecode groups of eight bits into Unicode text.Text tools Escape HTML entitiesEscape HTML ampersands, quotes and angle brackets.Text tools Unescape HTML entitiesDecode common and numeric HTML entities into text.Text tools Remove line numbersRemove leading numeric labels such as 1. or 42) from lines.Text tools Add line numbersPrefix each line with a sequential number.Text tools Remove extra spacesCollapse repeated spaces and tabs within lines.Text tools Extract email addressesExtract email-like addresses appearing in text.Text tools Extract URLs from textCollect http and https URLs found in text.Text tools Count duplicate line frequenciesCount and list repeated lines by occurrence.Text tools JSON array to NDJSONConvert a JSON array into newline-delimited JSON records.Data & spreadsheets NDJSON to JSON arrayConvert newline-delimited JSON records into a JSON array.Data & spreadsheets TSV to CSVConvert tab-separated columns into properly quoted CSV.Data & spreadsheets CSV to TSVConvert CSV records into a tab-separated table.Data & spreadsheets CSV to HTML tableGenerate safe HTML table markup from comma-separated values.Data & spreadsheets CSV to Markdown tableConvert a CSV table into Markdown table syntax.Data & spreadsheets Sort JSON object keysRecursively sort JSON object keys alphabetically.Data & spreadsheets Flatten JSON objectFlatten nested object keys into dot-separated properties.Data & spreadsheets Sort lines by lengthSort lines from shortest to longest.Text tools Remove accents from textRemove combining accents and diacritics from text.Text tools Remove punctuation from textRemove Unicode punctuation while preserving letters and numbers.Text tools Remove non-ASCII charactersRemove every non-ASCII character from a text document.Text tools Tabs to spacesReplace tab characters with four spaces.Text tools Four spaces to tabsReplace each group of four consecutive spaces with a tab.Text tools Transpose CSV rows and columnsSwap the rows and columns of a CSV table.Data & spreadsheets CSV to NDJSONConvert CSV records into newline-delimited JSON objects.Data & spreadsheets Minify JSONRemove unnecessary JSON whitespace without changing the data.Data & spreadsheets Text to Unicode escapesEncode Unicode text as JavaScript-compatible escaped code points.Text tools Unicode escapes to textDecode valid JavaScript-style Unicode escape sequences.Text tools Word frequency counterCount repeated words, sorted by frequency.Text tools SHA-512 file checksumCalculate a SHA-512 checksum of a local file.Developer utilities SHA-1 file checksumCalculate legacy SHA-1 checksums for file comparisons; not recommended for security.Developer utilities File to Base64Convert a small local file into Base64 text.Developer utilities Base64 to fileDecode Base64 text into a downloadable binary file.Developer utilities UUID v4 generatorGenerate cryptographically random version 4 UUIDs.Developer utilities Random password generatorGenerate strong random passwords locally.Developer utilities URL query parameter parserParse a URL and display its decoded query parameters as JSON.Developer utilities Unix timestamp converterConvert Unix timestamps to ISO dates or dates to timestamps.Developer utilities MP3 to WAVDecode a compatible MP3 into uncompressed WAV audio.Audio tools M4A to WAVDecode a compatible M4A file into WAV audio.Audio tools OGG to WAVDecode a compatible OGG file into WAV audio.Audio tools FLAC to WAVDecode a compatible FLAC file into WAV audio.Audio tools WebM audio to WAVConvert a compatible WebM audio recording into WAV audio.Audio tools Trim MP3 audio to WAVTrim part of an MP3 file and download it as WAV.Audio tools Trim WAV audioTrim a local WAV recording and export the selected range.Audio tools Trim M4A audio to WAVTrim a compatible M4A recording and download WAV.Audio tools Reverse audio to WAVReverse decoded audio samples and export as WAV.Audio tools Normalize audio volumeNormalize peak amplitude and export WAV audio.Audio tools Change audio volumeIncrease or reduce the volume of WAV output.Audio tools Fade audio in and outApply fade-in and fade-out envelopes to a WAV export.Audio tools Convert audio to monoMix stereo channels into mono WAV audio.Audio tools Remove silence from audioRemove quiet segments from decoded audio and export WAV.Audio tools MP3 to WebM audioConvert decoded .MP3 audio to Opus in a WebM container using browser recording.Audio tools WAV to WebM audioConvert decoded .WAV audio to Opus in a WebM container using browser recording.Audio tools M4A to WebM audioConvert decoded .M4A audio to Opus in a WebM container using browser recording.Audio tools FLAC to WebM audioConvert decoded .FLAC audio to Opus in a WebM container using browser recording.Audio tools OGG to WebM audioConvert decoded .OGG audio to Opus in a WebM container using browser recording.Audio tools Extract PNG frame from videoExtract one frame from a compatible video as a PNG image.Video tools Extract JPG frame from videoExtract one frame from a compatible video as a JPG image.Video tools Extract WebP frame from videoExtract one frame from a compatible video as a WebP picture.Video tools Create video contact sheetExport a grid of video frames as a PNG contact sheet.Video tools Trim video to WebMRecord a selected portion of a local video into WebM.Video tools Mute video to WebMCreate a silent WebM recording from a local video.Video tools Convert MP4 video to WebMRecord a short playable MP4 clip as WebM using browser media capture.Video tools Convert MOV video to WebMRecord a short playable MOV clip as WebM when the browser can decode it.Video tools JPG to PDFConvert JPEG images into PDF pages. Each page is sized to the selected image.PDF creation PNG to PDFConvert PNG images into PDF pages. Each page is sized to the selected image.PDF creation WebP to PDFConvert WebP pictures into PDF pages. Each page is sized to the selected image.PDF creation BMP to PDFConvert BMP pictures into PDF pages where your browser decodes BMP. Each page is sized to the selected image.PDF creation Merge images into one PDFCombine multiple local pictures into a multi-page PDF. Each page is sized to the selected image.PDF creation Stardew Valley save money editorChange the money field in a local Stardew Valley XML save file while preserving other save data.Game save tools Stardew Valley farm name editorChange the farm name in a local Stardew Valley XML save file.Game save tools JSON game save editorEdit a readable JSON-format game save and export a validated JSON file.Game save tools Download direct image URLFetch and save a publicly accessible image URL when cross-origin access is allowed.Link utilities Download direct video URLDownload a direct HTTPS video file URL where the server permits browser access.Link utilities Download direct audio URLSave a direct HTTPS audio file URL with browser-authorized access.Link utilities Resize an imageChange an image’s pixel width and height. Preserve aspect ratio or enter exact dimensions; export as PNG, JPG or WebP.Images Compress an imageReduce an image’s file size by choosing JPEG or WebP quality, or targeting a maximum size in KB.Images CSV to JSONConvert a comma-separated table into a formatted JSON array with column headers as object keys.Data & spreadsheets JSON to CSVTurn an array of JSON objects into a clean CSV download. Quotes, commas and line breaks are escaped correctly.Data & spreadsheets Remove duplicate CSV rowsRemove repeated CSV data rows while preserving the header and original row order.Data & spreadsheets JSON formatter & validatorValidate JSON, format it with indentation or minify it into a single line.Developer utilities URL encoder & decoderPercent-encode or decode URL component text using standard URI component rules.Developer utilities Base64 text encoder & decoderEncode UTF-8 text to Base64 or decode Base64 back to Unicode text.Developer utilities SHA-256 file checksumCalculate the SHA-256 fingerprint of a local file for integrity checking.Developer utilities Text case converterConvert text to uppercase, lowercase, title case, sentence case, snake_case or kebab-case.Text tools Remove duplicate text linesRemove repeated lines from a list while keeping the first occurrence and original order.Text tools Word & character counterCount words, characters, sentences and lines instantly while you type.Text tools