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Many tasks process directly on your device, reducing the need to upload files to a server.
97 TOOLS • FREE • NO SIGN-UPFree Online Tools.
Free Online Tools.
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DeloKit brings everyday image, PDF, text, data and media utilities into one focused workspace. Open a tool, get it done, download.
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97Free online tools
6Focused categories
VI · ENBilingual interface
TOP TOOLS
See all toolsTools for specific tasks
Focused utilities with clear intent and private, on-device processing where possible.
Top 1Photo to Scanned Document
Detect four corners, deskew perspective, remove shadows and combine document photos into a scanned PDF.
FocusedExtract Images from PDFExtract raster images embedded inside a PDF.
FocusedRemove Duplicate LinesRemove duplicated lines from text.
FocusedQuery String ParserParse a query string or URL into JSON.
FocusedRemove Image MetadataCreate a clean copy without common EXIF/GPS metadata.
FocusedImage to AVIFConvert JPG, PNG or WebP to AVIF with a jSquash WebAssembly codec.
FocusedHEIC ConverterConvert HEIC/HEIF photos from iPhone to JPG or PNG in your browser.
FocusedJSON CompareCompare two JSON structures and list differences.
BROWSE FASTER
Browse by category
Jump into a focused category, then choose the exact tool you need.
Image Tools21 tools
↗Compress, resize, convert and optimize images directly in your browser.
PDF Tools9 tools
↗Merge, split, rotate and edit PDF files with privacy-first browser tools.
Text Tools13 tools
↗Clean, transform and analyze text with simple online utilities.
Developer Tools12 tools
↗JSON, JWT, URL, UUID and other developer utilities in one place.
Utility Tools10 tools
↗Useful calculators, converters and small helpers for everyday work.
Video & Audio Tools3 tools
↗Small browser-based tools for video and audio tasks.
TOOL LIBRARY
All tools
Filter the full library or start with a category.
Photo to Scanned DocumentRemove shadows, whiten paper and combine document photos into a clean scanned PDF.↗Extract Images from PDFExtract raster images embedded inside a PDF.↗Remove Duplicate LinesRemove duplicated lines from text.↗Query String ParserParse a query string or URL into JSON.↗Remove Image MetadataCreate a clean copy without common EXIF/GPS metadata.↗Image to AVIFConvert JPG, PNG or WebP to AVIF with a jSquash WebAssembly codec.↗HEIC ConverterConvert HEIC/HEIF photos from iPhone to JPG or PNG in your browser.↗JSON CompareCompare two JSON structures and list differences.↗Compress ImageReduce image file size with adjustable quality.↗Remove BackgroundAutomatically isolate the main subject and remove the background with U²-NetP running in your browser.↗Merge PDFMerge multiple PDFs in your selected order.↗Video to MP3Convert video files to MP3 directly in your browser.↗Image ConverterConvert JPG, PNG and WebP directly on your device.↗Image to PDFCombine JPG/PNG images into one PDF file.↗Split PDFExtract one or more page ranges into a new PDF.↗PDF to ImagesRender PDF pages as PNG images.↗Image to Text OCRExtract Vietnamese or English text from images.↗Resize ImageChange width and height while preserving aspect ratio.↗Crop ImageCrop an exact image region using coordinates and dimensions.↗Video to MP4Convert video files to MP4 for broader compatibility.↗Trim VideoChoose a start and end time to trim a video.↗Word & Character CounterCount words, characters, sentences and reading time.↗JSON FormatterFormat, minify and validate JSON.↗AI Image UpscalerUpscale images 2x or 4x with ESRGAN Slim in your browser and compare Before ↔ After.↗PDF to TextExtract selectable text from a PDF in your browser.↗Video to GIFTrim a clip from a video and export it as a GIF.↗Password GeneratorGenerate random passwords with character options.↗Percentage CalculatorCalculate percentages, increases and ratios.↗Age CalculatorCalculate exact age from a birth date.↗UUID GeneratorGenerate UUID v4 values with Web Crypto.↗Simple CalculatorCalculate arithmetic expressions with + − × ÷ and parentheses.↗Audio to MP3Convert WAV, M4A, OGG and other audio files to MP3.↗Case ConverterConvert UPPERCASE, lowercase, Title Case and Sentence case.↗Batch Image ConverterConvert multiple images to JPG, PNG or WebP and download them together as a ZIP.↗Delete PDF PagesRemove selected pages from a PDF.↗Rotate PDF PagesRotate all PDF pages by 90°, 180° or 270°.↗PNG OptimizerOptimize PNG file size with OxiPNG WebAssembly directly in your browser.↗Audio TrimmerTrim an audio segment and export WAV in your browser.↗Text DiffCompare two texts line by line.↗Slug GeneratorTurn a title into a clean URL-friendly slug.↗JWT DecoderInspect JWT header and payload without uploading the token.↗Unix Timestamp ConverterConvert seconds/milliseconds timestamps to dates and back.↗JSON to CSVConvert a JSON object array into CSV.↗CSV to JSONConvert CSV with headers into JSON.↗ZIP FilesBundle multiple files into a ZIP directly on your device.↗Unzip FilesOpen a ZIP and download files inside without uploading it to a server.↗Length ConverterConvert mm, cm, m, km, inch, foot and mile.↗Date DifferenceCalculate the number of days between two dates.↗Aspect Ratio CalculatorCalculate a missing dimension while keeping aspect ratio.↗Random Number GeneratorGenerate one or more random numbers in a range.↗Image Color PickerClick an image to pick a pixel HEX and RGB color.↗Image DimensionsInspect pixel dimensions, aspect ratio and file size.↗Rotate ImageRotate an image by 90°, 180° or 270°.↗Brightness & ContrastAdjust image brightness and contrast before download.↗Grayscale ImageConvert a color image to grayscale.↗Image to Base64Convert an image to a Base64 Data URL.↗Base64 to ImageRestore an image from a Data URL or Base64 string.↗Flip ImageFlip an image horizontally or vertically in your browser.↗Add PDF Page NumbersAdd page numbers to the bottom of each PDF page.↗Add PDF WatermarkAdd a text watermark to every PDF page.↗PDF Metadata EditorView and edit PDF title, author, subject and keywords.↗Text CleanerRemove extra spaces and excessive blank lines.↗Find & ReplaceQuickly find and replace within text.↗Lorem Ipsum GeneratorGenerate placeholder text by paragraph count.↗Sort LinesSort lines A→Z, Z→A or by length.↗Reverse TextReverse characters, words or line order.↗Text Base64Encode or decode UTF-8 text as Base64.↗HTML Escape / UnescapeEscape or unescape special HTML characters.↗Character FrequencyAnalyze the most frequent characters in text.↗URL Encoder / DecoderEncode or decode URLs and URL components.↗SHA-256 Hash GeneratorGenerate a SHA-256 hash from text on your device.↗Color ConverterConvert HEX to RGB/HSL and back.↗Mermaid DiagramTurn Mermaid syntax into flowcharts, sequence diagrams and more.↗Data Size ConverterConvert B, KB, MB, GB and TB.↗Mute VideoExport a silent copy of a video with the audio removed.↗Video ThumbnailPick a time and save a video frame as PNG.↗Video InfoInspect video resolution, duration, format and file size.↗Compress VideoReduce video size with H.264 and AAC on your device.↗Merge VideosMerge multiple videos in the selected order.↗Crop VideoCrop a rectangular region from a video frame.↗Resize VideoChange video width and height with FFmpeg.↗Change Video SpeedSpeed up or slow down video and audio together.↗Add Audio to VideoReplace or mix an audio track into a video.↗Images to GIFCombine multiple images into an animated GIF with an optimized palette.↗Audio ConverterConvert audio to MP3, WAV, AAC or OGG.↗Merge AudioMerge multiple audio files into one MP3.↗Change Audio SpeedSpeed up or slow down audio while preserving pitch.↗Loop AudioRepeat an audio file for your selected play count.↗JSON ValidatorValidate JSON syntax entirely locally.↗JSON SortSort JSON keys alphabetically, including nested objects.↗JSON to XMLConvert JSON to XML directly in your browser.↗XML BeautifierFormat XML with readable indentation.↗XML ValidatorValidate XML syntax and show parsing errors.↗CSV to TSVConvert quoted CSV data to TSV.↗CSV to XMLConvert CSV rows into XML elements.↗CSV to YAMLConvert CSV with headers into a YAML list.↗TSV to JSONConvert TSV with headers into a JSON array.↗
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Image, PDF, text, developer utilities, calculators and media live in one experience.
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Skip installing software for small jobs. DeloKit puts frequently used utilities into one fast, consistent interface.