KIOHWKIO HARDWARE TEST
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    Tools
      Hardware tests39
      Input devicesKeyboard testMouse testGamepad testStylus and pen testPS5, PS4 and Switch controller testDouble click testScroll wheel test
      DisplayMonitor testRefresh rate testStuck pixel fixerColor blindness testScreen size and PPI calculatorMonitor calibration test
      Audio and cameraSpeaker testMicrophone testWebcam testHearing test3D audio testAudio latency testDecibel meterFocus sounds
      MobileTouch screen testSensor testVibration testGPS testNFC test
      NetworkMy IP addressPing and jitter testDNS speed testWebRTC leak testIPv6 test
      Speed and reflexesCPS testReaction time testTyping speed test
      SystemSystem infoCPU and GPU benchmarkStorage speed testUSB device info
      MusicMIDI keyboard test
      PDF tools41
      Organize PDFMerge PDFSplit PDFRemove pagesExtract pagesOrganize PDFScan to PDFAdd pages to PDFMultiple pages per sheet
      Optimize PDFCompress PDFRepair PDFOCR PDFPDF to PDF/A
      Convert to PDFJPG to PDFOffice to PDF
      Convert from PDFPDF to JPGPDF to WordPDF to PowerPointPDF to MarkdownPDF to ExcelExtract images from PDFPDF to textPDF to CSVPDF to HTML
      Edit PDFRotate PDFAdd page numbersAdd watermarkCrop PDFFill PDF formsEdit PDFEdit PDF metadataChange PDF page sizePDF bookmarksBates numberingAdd QR code to PDFCreate fillable PDFAttach files to PDF
      PDF securityUnlock PDFProtect PDFSign PDFRedact PDFCompare PDF
      AI PDF toolsSummarize PDF (AI)Coming soonTranslate PDF (AI)Coming soonChat with PDF (AI)Coming soon
      Media tools25
      ImagesHEIC to JPGCompress imageResize imageImage converterEXIF viewer and removerRemove backgroundQR code generatorQR code scannerCrop and rotate imageWatermark imagesImage to text (OCR)
      Audio and videoVideo to MP3Compress videoTrim videoScreen recorderWebcam recorderVoice recorderVideo to GIFVideo converterRotate and crop videoMerge videosAudio cutterAudio converterNormalize audio
      FilesFile hash checker
      105 free tools · no install · files stay on your device

      Test your hardware,
      convert your files.

      Keyboard, screen, audio and connection tests plus PDF, image and video tools. All in your browser, in seconds.

      Hardware tests

      Keyboard, mouse, display, audio, camera, network and system tests

      Input devices7

      Keyboard testEvery key, rollover (NKRO) and chatter detectionMouse testButtons, polling rate, double click and DPIGamepad testButtons, sticks, drift, triggers and vibrationStylus and pen testPressure levels, tilt, report rate and hoverPS5, PS4 and Switch controller testGyro, light bar, rumble, touchpad and batteryDouble click testFind a chattering mouse buttonScroll wheel testCheck the mouse wheel for skipping and jumping back

      Display6

      Monitor testDead pixels, backlight bleed, banding, sharpnessRefresh rate testMeasured Hz, frame time and motion clarityStuck pixel fixerFlashing colors to revive stuck pixelsColor blindness testRed-green and blue-yellow screening platesScreen size and PPI calculatorPixel density, dot pitch and real screen sizeMonitor calibration testBlack level, gamma, gradients and sharpness

      Audio and camera8

      Speaker testLeft/right, phase, frequency sweep, 5.1/7.1Microphone testLevel meter, spectrum, recording and playbackWebcam testReal FPS, resolutions, snapshot and mirrorHearing testHighest and lowest frequency you can hear3D audio testBinaural surround sound and direction quizAudio latency testBluetooth delay and speaker-to-mic round tripDecibel meterMeasure noise level in dB with your microphoneFocus soundsPink and brown noise, rain, ocean waves and wind

      Mobile5

      Touch screen testMulti-touch points, dead zones and pressureSensor testAccelerometer, gyroscope and compassVibration testVibration motor with patternsGPS testPosition fix, accuracy, speed and stabilityNFC testRead and write NFC tags with your phone

      Network5

      My IP addressPublic IP, provider and approximate locationPing and jitter testLive latency graph, packet loss, server regionsDNS speed testCompare Cloudflare, Google, Quad9 and moreWebRTC leak testCheck if your VPN leaks your real IPIPv6 testIs your connection IPv6 ready?

      Speed and reflexes3

      CPS testClicks per second with mouse, touch or spacebarReaction time testVisual reaction speed in millisecondsTyping speed testWords per minute and accuracy in 12 languages

      System4

      System infoBrowser, OS, CPU, GPU, screen and featuresCPU and GPU benchmarkSingle-core, multi-core, WebGL and WebGPU scoresStorage speed testSequential and 4K random read/write speedUSB device infoVendor, product ID, USB version and interfaces

      Music1

      MIDI keyboard testKeys, velocity, pedals, knobs and MIDI out

      PDF tools

      Merge, split, compress, convert, sign and edit

      All PDF tools

      Organize PDF8

      Merge PDFCombine several PDFs into one fileSplit PDFSplit a PDF by ranges or into single pagesRemove pagesDelete pages from a PDFExtract pagesSave selected pages as a new PDFOrganize PDFReorder, rotate, delete and add pagesScan to PDFUse your camera to scan documents into a PDFAdd pages to PDFInsert blank pages or pages from another PDFMultiple pages per sheet2, 4 or more pages on one sheet, or a booklet

      Optimize PDF4

      Compress PDFReduce PDF file sizeRepair PDFFix damaged or corrupt PDF filesOCR PDFMake scanned PDFs searchablePDF to PDF/AConvert to the archival PDF/A format

      Convert to PDF2

      JPG to PDFTurn images into a PDFOffice to PDFWord, Excel, PowerPoint and HTML to PDF

      Convert from PDF9

      PDF to JPGSave every page as an imagePDF to WordEditable Word document from a PDFPDF to PowerPointTurn PDF pages into slidesPDF to MarkdownExtract text with headings and listsPDF to ExcelExtract tables to an XLSX spreadsheetExtract images from PDFSave every picture in a PDFPDF to textExtract plain text (TXT) from a PDFPDF to CSVExport tables from a PDF as CSVPDF to HTMLTurn a PDF into a web page

      Edit PDF13

      Rotate PDFRotate all or single pagesAdd page numbersNumber the pages of a PDFAdd watermarkStamp text or an image on a PDFCrop PDFTrim margins of PDF pagesFill PDF formsFill in and save PDF form fieldsEdit PDFAdd text, shapes, highlights, notes and imagesEdit PDF metadataChange or remove title, author and other propertiesChange PDF page sizeResize pages to A4, Letter, A3 and morePDF bookmarksAdd, edit or create a table of contentsBates numberingStamp sequential document numbers on pagesAdd QR code to PDFStamp a QR code or barcode on PDF pagesCreate fillable PDFAdd text fields, checkboxes and dropdownsAttach files to PDFEmbed files inside a PDF

      PDF security5

      Unlock PDFRemove the password from a PDFProtect PDFAdd a password to a PDFSign PDFDraw, type or upload your signatureRedact PDFBlack out sensitive informationCompare PDFFind text differences between two PDFs

      AI PDF tools3

      Coming soonSummarize PDF (AI)Key points of any document with AIComing soonTranslate PDF (AI)Translate a document into 25+ languagesComing soonChat with PDF (AI)Ask questions and get answers from a document

      Media tools

      Convert and edit images, video and audio

      All media tools

      Images11

      HEIC to JPGConvert iPhone photos to JPGCompress imageMake JPG, PNG and WebP files smallerResize imageChange width and height in pixels or percentImage converterConvert between JPG, PNG, WebP and HEICEXIF viewer and removerSee and delete photo location and camera dataRemove backgroundCut out people and objects automaticallyQR code generatorLinks, Wi-Fi, contacts and text as QR codesQR code scannerRead QR codes with your camera or from an imageCrop and rotate imageCrop to any ratio, rotate and flipWatermark imagesAdd a text or logo watermark to photosImage to text (OCR)Copy text from photos and screenshots

      Audio and video13

      Video to MP3Extract the audio track from any videoCompress videoMake MP4, MOV and WebM videos smallerTrim videoCut the start or end of a video or audio fileScreen recorderRecord your screen, a window or a tab with soundWebcam recorderRecord video from your camera with soundVoice recorderRecord audio from your microphone, save as MP3Video to GIFTurn a video clip into a GIF or animated WebPVideo converterConvert videos between MP4, WebM, MOV, MKV and AVIRotate and crop videoRotate, flip and crop videos to any aspect ratioMerge videosJoin several videos or audio files into oneAudio cutterCut MP3 and other audio, make ringtonesAudio converterConvert to MP3, WAV, M4A, FLAC, OGG and OpusNormalize audioMake audio and video loudness even (LUFS)

      Files1

      File hash checkerSHA-256, MD5 and SHA-1 checksums of any file