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Image toolsDocument toolsAudio toolsData & codeVideo toolsCalculatorsTests & random toolsConvertToolsSpecialized areas
What can gottrix do?
Local, not uploaded
Every conversion runs in your browser - your files never leave your device and are never uploaded. Verifiable: gottrix even works in airplane mode.
Over 500 tools
Convert and edit images, PDFs, audio and video, transform dozens of data formats like CSV, JSON and XML, plus over 120 calculators, hash and crypto tools, and QR and barcode generators.
Fast and offline
No server round-trip: processing starts instantly, with no upload wait. After the first load gottrix works offline too, and results use open, standard formats.
Highlight: the PDF editor
Edit PDF Full-screen editor · No upload
Fill forms, edit text, draw, sign, comment and reorder pages - all in one session, entirely in your browser.
Most used
Image tools
All toolsDDS to PNGHDR to PNGPCX to PNGWBMP to PNGHEIC to JPGHEIC to PNGHEIC to WebPHEIC to AVIFQOI to PNGPNG to QOIWebP to JPGWebP to PNGJPG to WebPPNG to WebPJPG to PNGPNG to JPGAVIF to JPGAVIF to PNGJPG to AVIFPNG to AVIFJXL to JPGJXL to PNGJPG to JXLPNG to JXLBMP to PNGBMP to JPGPNG to BMPTGA to PNGGIF to PNGGIF to JPGTIFF to JPGTIFF to PNGICO to PNGPNG to ICOFavicon generatorSVG to PNGSVG to JPGTTF to WOFF2OTF to WOFF2WOFF to WOFF2WOFF2 to TTFWOFF2 to OTFTTF to EOTFont subsettingFont InformationGlyph CoveragePNG to SVGSVGZ to SVGSVG optimizationPSD to PNGPSD to JPGRAW to PNGRAW to JPGJFIF to PNGPPM to PNGICNS to PNGCompress imagesResize imagesRemove image metadataRotate imageCrop imageWatermark imageImage collageGrayscale ImageInvert Image ColorsSepia ImagePixelate ImageAdd Image BorderCircle CropImage to ASCII ArtDither ImageBlur ImageSharpen ImageBrightness and ContrastFlip ImagePosterize ImageThreshold ImageSaturate ImageVignette ImageRotate HueEmboss ImageDetect EdgesSolarize ImageColor TemperatureAdd NoiseTint ImageAuto ContrastDuotonePencil SketchExtract Colour PaletteImage to Data URIRound Image CornersQR code generatorPassport photo crop 35x45Government form photo (India)Image to text (OCR)GIF to APNGAPNG to GIFOptimize GIFQR code readerBarcode generatorBarcode readerDataMatrix generatorPDF417 generatorAztec code generatorPix QR Code (Brazil)Remove backgroundUpscale image
Document tools
All toolsDOCX to HTMLDOCX to MarkdownMarkdown to HTMLEPUB to TXTCBZ to PDFCBR to PDFCB7 to PDFRTF to TXTJPG to PDFPDF to JPGPDF to PNGMerge PDFSplit PDFRotate PDFDelete PDF pagesExtract PDF pagesOrganize PDFAdd page numbersEdit PDF metadataResize PDF pagesPDF pages per sheet (N-up)Crop PDFPDF header, footer & BatesPDF image watermarkWatermark PDFUnlock PDFProtect PDF with a passwordSign PDFEdit PDFFlatten PDF formPDF to textPDF to MarkdownExtract PDF tablesPDF to ExcelPDF to WordPDF to PowerPointPDF to EPUBMarkdown to PDFDOCX to PDFCompress PDFRedact PDFCompare PDFBMP to PDFGIF to PDFTIFF to PDFTXT to PDFResume BuilderHTML to PDFHTML to MarkdownPDF OCR (searchable)Cancellation Letter GeneratorXLS to XLSXXLS to CSVODS to XLSXODS to CSVPages to PDFNumbers to PDFKeynote to PDF
Audio tools
All toolsMP4 to MP3Audio converterMIDI ConverterMP3 to WAVWAV to MP3M4A to MP3FLAC to MP3OGG to MP3AAC to MP3WAV to FLACOpus to MP3AIFF to MP3DSD to FLACWMA to MP3AMR to MP3CAF to MP3MKV to MP3MOV to MP3WebM to MP3AVI to MP3Video to WAVVideo to M4ANormalize audioCompress audioStrip metadataAudio speedMono to stereoReverse audioSplit audioFind the BPMFind the keyCreate a spectrogramRemove noiseAudio to textText to speechRecord audioTrim audioMerge audio filesRingtone makerFade audio in/outRemove silenceStereo to monoSwap left/rightEdit MP3 tagsCreate a waveform image
Data & code
All toolsCreate ZIPExtract ZIPGzip compressGzip decompressCreate TARExtract TARXLSX to CSVCSV to XLSXGeoJSON to KMLKML to GeoJSONGPX to GeoJSONGeoJSON to GPXGeoJSON to WKTWKT to GeoJSONKML to GPXGPX to KMLGeoJSON to CSVCSV to GeoJSONGeoJSON to NDJSONNDJSON to GeoJSONGeoJSON to TopoJSONTopoJSON to GeoJSONSTL to OBJOBJ to STLSTL binary to ASCIISTL ASCII to binaryPLY to STLPLY to OBJOBJ to PLYSTL to PLYSTL to GLBOBJ to GLBGLB to OBJGLB to glTFglTF to GLBConvert DXFSVG to DXFDXF to GeoJSONCSV to MarkdownExcel to MarkdownJSON to YAMLYAML to JSONXML to JSONJSON to XMLTOML to JSONJSON to TOMLYAML to TOMLTOML to YAMLXML to YAMLYAML to XMLJSONL to JSONJSON to JSONLJSON to MarkdownXML to TOMLTOML to XMLCSV to JSONJSON to CSVSQLite to CSVSQLite to JSONSQLite to ExcelDBF to CSVJSON to ExcelXLSX to JSONXLSX to HTMLVCF to CSVCSV to VCFICS to CSVCSV to ICSCSV to SQLCSV to XMLExtract 7zExtract CABExtract compressed TARArchive to ZIPImages to CBZCBR to CBZCB7 to CBZAvro to JSONParquet to CSVParquet to JSONArrow to CSVArrow to JSONShapefile to GeoJSONSplit CSVSplit XLSXEncrypt fileDecrypt fileCreate password ZIPExtract password ZIPGenerate PGP key pairEncrypt with PGPDecrypt with PGPView X.509 CertificateCSR GeneratorCalculate a checksumCalculate an HMACEncode to Base64Decode Base64Decode JWTUUID generatorPassword generatorTOTP generatorBIP39 generatorSteganographyFormat JSONChange caseEncode URLDecode URLSort linesWord counterSlugifyBase converterEncode HTMLDecode HTMLUnix timestampColor converterLorem ipsum generatorRegex testerEscape JSONRoman numeralsMorse codeText to binaryFind & replaceClean whitespaceStrip HTMLUnicode escapeWord frequencyReading timeText to Base64Text to ASCII codesROT13 cipherNumber LinesWrap TextShuffle LinesSum NumbersExtract Email AddressesExtract URLsJoin LinesExtract NumbersFormat CSVReadability indexCyrillic to LatinCPF/CNPJ BrazilCodice FiscaleDNI/NIE SpainCURP/RFC MexicoCheck a PESEL numberCheck a NIP/REGON numberCheck a BSN (11-proef)Check a personnummerCheck an EGNPAN validatorTC Kimlik No validatorNIK decoderEgyptian National ID decoderNumber to WordsChat Export Analyzer (WhatsApp)IBAN Validator
Video tools
All toolsConvert videoTrim videoRemove video audioEdit videoRotate videoMirror videoVideo thumbnailVideo watermarkVideo speedMerge videosReplace video audioCrop videoBurn in subtitlesRecord your screenMOV to MP4MKV to MP4WebM to MP4MP4 to WebMMP4 to MKVMP4 to MOVMTS/M2TS to MP4FLV to MP43GP to MP4AVI to MP4WMV to MP4VTT to ASSASS to VTTVideo to subtitlesRecord your webcamConvert SRT to VTTASS to SRTSRT to ASSConvert VTT to SRTSubtitle to textCompress videoChange video resolutionStrip video metadataNormalize volumeExtract subtitlesVideo to GIFReverse videoBoomerang loopVertical videoGIF to MP4GIF to WebMImages to videoVideo to imagesCut video silenceAnalyze a media fileShift subtitlesRepair subtitlesMerge subtitlesSplit subtitlesSRT to SBVSBV to SRTSRT to LRCLRC to SRTSRT to TTMLTTML to SRTSAMI to SRTVTT to SBV
Calculators
All toolsCompound Interest CalculatorLoan CalculatorVAT CalculatorSavings Goal CalculatorInflation CalculatorDiscount CalculatorTip CalculatorFuel Cost CalculatorEnergy Cost CalculatorPercentage CalculatorROI CalculatorMargin CalculatorSimple Interest CalculatorHourly Wage CalculatorRule of Three CalculatorWithdrawal Plan CalculatorCash Discount CalculatorRental Yield CalculatorCap Rate CalculatorCash-on-Cash CalculatorFIRE CalculatorNet Worth CalculatorPension Gap CalculatorNPV CalculatorIRR CalculatorPayback Period CalculatorClosing Costs CalculatorAffordability CalculatorRemaining Balance CalculatorRent vs Buy CalculatorDebt Payoff CalculatorCredit Card Payoff CalculatorDepreciation CalculatorFreelance Rate CalculatorEffective Rate CalculatorLeasing CalculatorWorking Days CalculatorAverage Stock Price CalculatorDividend Yield CalculatorFund Fee CalculatorRunning PaceIdeal Weight CalculatorWeek Number CalculatorWareki Calendar ConverterTaiwan Calendar ConverterHijri Calendar ConverterThai Calendar ConverterLunar Calendar and ZodiacInheritance Tax CalculatorGerman Gift Tax CalculatorTransfer Tax CalculatorVehicle Tax CalculatorGerman Income Tax CalculatorCapital Gains Tax CalculatorGerman Trade Tax CalculatorGerman Corporate Tax CalculatorMonthly ISR CalculatorAguinaldo Calculator (Mexico)Poland Salary CalculatorTurkey Salary CalculatorTurkey Severance Pay CalculatorUkraine Salary CalculatorPPh 21 Tax CalculatorBPJS Contribution CalculatorTNCN Tax CalculatorFD & RD Calculator (India)Gratuity Calculator (India)NPS Calculator (India)Income Tax (India)CTC to In-Hand Salary (India)Gross to Net Salary (France)Net Salary Italy (RAL)Gross to Net Salary NLAspect Ratio CalculatorPixel Density (PPI) CalculatorCircle CalculatorRectangle CalculatorTriangle CalculatorLength converterWeight converterTemperature ConverterData Size ConverterBreak-even CalculatorPercentage Change CalculatorBMI CalculatorCalorie CalculatorInverse Rule of Three CalculatorUnit Price CalculatorBody Fat CalculatorDate Difference CalculatorFGTS Calculator (Brazil)Financing Calculator (Brazil)Tedori Calculator (Japan)Shohizei Calculator (Japan)Korea Net Salary CalculatorJeonse ConverterMortgage CalculatorPaycheck CalculatorSales Tax CalculatorIncome Tax CalculatorAuto Loan CalculatorStudent Loan Calculator401(k) CalculatorRoth IRA CalculatorGross-Net Salary CalculatorEMI CalculatorSIP CalculatorGST CalculatorHRA CalculatorPPF CalculatorAge CalculatorGPA CalculatorDue Date CalculatorOvulation CalculatorBrazil Net SalaryBrazil Termination SettlementBrazil 13th SalaryBrazil Vacation PayZakat CalculatorTake-Home Pay Calculator (UK)Stamp Duty Calculator (UK)Time Card CalculatorHourly to SalaryCurrency Converter