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Change the image format, and check every result.

A free image converter with 70 formats in and out, from JPG and HEIC to Photoshop, camera RAW and 1980s Unix bitmaps. JPG, PNG, WebP and AVIF use your browser's encoders, and GIF, BMP, ICO and TIFF are written by this page. The other 62 go through ImageMagick compiled to WebAssembly, which downloads once when you pick one and runs on your device. Every result is decoded again and compared with the original before you save it.

collections

Drop images or click to chooseany of 70 formats · several at once · nothing leaves your device

photo_libraryTry 3 samples

inboxno images yet

downloadSaveremove

Converted on this device · nothing uploaded

folder_zipswap_horizAdd images first

1Save as70 formats · 8 built in

language.webpWebsitesmall, every browser

photo_camera.jpgPhoto for anyoneopens on any device

layers.pngKeep transparencylossless logos, screens

compress.avifSmallest fileAV1 compression

print.tiffPrint & scanslossless master

brush.psdPhotoshopopen in PSD apps

searchAll 70 formats9 familiesexpand_more

No format matches “”.

.webpUsually the smallest lossy file browsers all open, and it keeps transparency.written by browser encoder

2Quality80Passed to the WEBP encoder as 0.80. Each browser maps it to its own quantiser, so 80 in Chrome and 80 in Safari differ slightly.

3Longest side

original2048 px1280 px640 px

4Fill transparency

whiteblacklight grey

Used where the output can’t hold transparency (JPG) and as the backdrop when accuracy is measured.

~/all-eight-on-your-image

Which format suits this image? Measure it.

Your first image is written in all eight formats at your quality setting, then each file is decoded again. Nothing in the result is looked up; every number comes from the files just made.

straightenSizebytes of each real file

visibilityAccuracyPSNR against what you see

opacityTransparencykept, filled or on/off

timerSpeedencode time on this device

No image added yet, so it measures a generated logo with half-transparent areas.scienceMeasure on a test image

.jpgsizePSNRbrowser encoder

.pngsizePSNRbrowser encoder

.webpsizePSNRbrowser encoder

.avifsizePSNRbrowser encoder

.gifsizePSNRwritten by this page

.bmpsizePSNRwritten by this page

.icosizePSNRwritten by this page

.tiffsizePSNRwritten by this page

formatsizePSNRalphatime

original · centre at 2×

~/all-70-formats

Every format, written and read back in your browser.

The test writes one small image with a gradient and a half-transparent corner in every format that can be written here, opens each file again, and compares it with the original. Formats that only open are marked from ImageMagick's own list of what this build reads.

55written & reopened

28pixel-identical

10open only

5not available

Runs on a 48×32 test image. Loads ImageMagick (5.4 MB) first, then takes a few seconds.scienceTest all 70

formatwhat it isfirst bytesopens herewrites hereround trip

Web & everyday10 formats

.10 formatsWeb & everyday

1.1 KB · 31.7 dB · alpha filled white · lossyJPEG

.jpgJPEGphotos; opens on every deviceFF D8 FFbrowserbrowsernot tested yet

1.9 KB · identical · alpha keptPNG

.pngPNGlossless with transparency89 50 4E 47browserbrowsernot tested yet

780 B · 31.9 dB · alpha kept · lossyWebP

.webpWebPsmall web images, alphaRIFF … WEBPbrowserbrowsernot tested yet

673 B · 32.0 dB · alpha kept · lossyAVIF

.avifAVIFAV1 stills, smallest… ftypavifbrowserbrowsernot tested yet

1.3 KB · 19.8 dB · alpha lost · 256 colours, alpha on/offGIF

.gifGIF256 colours, animation47 49 46 38browserthis pagenot tested yet

1.9 KB · identical · alpha keptSVG

.svgSVGvector; written with the pixels inside<svgbrowserImageMagicknot tested yet

1.9 KB written, could not reopenSVGZ

.svgzSVGZgzip-compressed SVG1F 8BImageMagickImageMagicknot tested yet

2.0 KB · identical · alpha keptAnimated PNG

.apngAnimated PNGPNG with frames89 50 4E 47 (acTL)browserthis pagenot tested yet

542 B · 38.3 dB · alpha kept · lossy at this qualityJPEG XL

.jxlJPEG XLISO 18181, lossless JPEG recompressionFF 0A / JXLImageMagickImageMagicknot tested yet

2.2 KB · identical · alpha keptQOI

.qoiQOIQuite OK Image, fast lossless71 6F 69 66ImageMagickImageMagicknot tested yet

Print & professional12 formats

.12 formatsPrint & professional

6.3 KB · identical · alpha keptTIFF

.tiffTIFFprint, scans, master files49 49 2A 00this pagethis pagenot tested yet

6.3 KB · identical · alpha keptTIFF (.tif)

.tifTIFF (.tif)same format, short extension49 49 2A 00this pagethis pagenot tested yet

4.8 KB · 27.2 dB · alpha kept · flattenedPhotoshop

.psdPhotoshopPhotoshop document, flattened38 42 50 53ImageMagickImageMagicknot tested yet

opens only, nothing to writeGIMP

.xcfGIMPGIMP project file67 69 6D 70ImageMagickImageMagicknot tested yet

13.1 KB · identical · alpha keptOpenEXR

.exrOpenEXRfloat HDR for VFX76 2F 31 01ImageMagickImageMagicknot tested yet

3.8 KB · 12.9 dB · alpha filled white · RGBE shared exponentRadiance HDR

.hdrRadiance HDRRGBE high dynamic range#?RADIANCEImageMagickImageMagicknot tested yet

1.7 KB · 42.6 dB · alpha keptDirectDraw Surface

.ddsDirectDraw SurfaceGPU textures for games44 44 53 20ImageMagickImageMagicknot tested yet

6.2 KB · identical · alpha keptTarga

.tgaTarga3D and game pipelinesfooter TRUEVISIONImageMagickImageMagicknot tested yet

1.8 KB · identical · alpha keptJPEG 2000

.jp2JPEG 2000wavelet; medical, archives, cinema00 00 00 0C 6A 50ImageMagickImageMagicknot tested yet

691 B · 41.6 dB · alpha filled whiteStereo JPEG

.jpsStereo JPEGside-by-side 3D photoFF D8 FFImageMagickImageMagicknot tested yet

18.4 KB · identical · alpha filled whitePortable float map

.pfmPortable float map32-bit float pixelsPF / PfImageMagickImageMagicknot tested yet

8.6 KB · 11.5 dB · alpha filled white · FITS scalingFITS

.ftsFITSastronomy dataSIMPLE =ImageMagickImageMagicknot tested yet

Phone photos & JPEG names7 formats

.7 formatsPhone photos & JPEG names

opens only, nothing to writeHEIC

.heicHEICiPhone photos (HEVC)… ftypheiclibheif / ImageMagickImageMagicknot tested yet

opens only, nothing to writeHEIF

.heifHEIFthe container behind HEIC… ftypmif1libheif / ImageMagickImageMagicknot tested yet

1.1 KB · 31.7 dB · alpha filled white · lossyJPEG (.jpeg)

.jpegJPEG (.jpeg)same bytes as .jpgFF D8 FFbrowserbrowsernot tested yet

1.1 KB · 31.7 dB · alpha filled white · lossyJPEG (.jpe)

.jpeJPEG (.jpe)same bytes as .jpgFF D8 FFbrowserbrowsernot tested yet

1.1 KB · 31.7 dB · alpha filled white · lossyJFIF

.jfifJFIFsame bytes as .jpgFF D8 FF E0 … JFIFbrowserbrowsernot tested yet

1.1 KB · 31.7 dB · alpha filled white · lossyJPEG (.jfi)

.jfiJPEG (.jfi)same bytes as .jpgFF D8 FFbrowserbrowsernot tested yet

1.1 KB · 31.7 dB · alpha filled white · lossyJPEG (.jif)

.jifJPEG (.jif)same bytes as .jpgFF D8 FFbrowserbrowsernot tested yet

Windows & icons5 formats

.5 formatsWindows & icons

6.3 KB · identical · alpha keptBMP

.bmpBMPuncompressed Windows bitmap42 4Dbrowserthis pagenot tested yet

not in this buildDIB

.dibDIBBMP without the file headerBITMAPINFOHEADERImageMagickImageMagicknot tested yet

26.3 KB · square icon sizes, not comparedICO

.icoICOfavicons, 16-256 px00 00 01 00browserthis pagenot tested yet

6.5 KB · square icon sizes, not comparedCursor

.curCursorWindows mouse cursor00 00 02 00ImageMagickImageMagicknot tested yet

not in this buildApple icon

.icnsApple iconmacOS app icons69 63 6E 73ImageMagickImageMagicknot tested yet

Unix & X117 formats

.7 formatsUnix & X11

2.8 KB · 19.8 dB · alpha lost · palette, alpha on/offX PixMap

.xpmX PixMapC source with a colour table/* XPM */ImageMagickImageMagicknot tested yet

1.3 KB · 5.8 dB · alpha filled white · 1-bit by designX BitMap

.xbmX BitMap1-bit C source#defineImageMagickImageMagicknot tested yet

not in this buildX Window dump

.xwdX Window dumpX11 screen captureheader size, version 7ImageMagickImageMagicknot tested yet

7.2 KB · identical · alpha filled whiteXV thumbnail

.xvXV thumbnailxv viewer thumbnailsP7 332ImageMagickImageMagicknot tested yet

6.2 KB · identical · alpha filled whiteSun Raster

.sunSun RasterSunOS workstations59 A6 6A 95ImageMagickImageMagicknot tested yet

5.3 KB · identical · alpha keptSGI

.sgiSGISilicon Graphics, RLE01 DAImageMagickImageMagicknot tested yet

6.2 KB · identical · alpha filled whiteSun Raster (.ras)

.rasSun Raster (.ras)same as .sun59 A6 6A 95ImageMagickImageMagicknot tested yet

Netpbm & raw pixels8 formats

.8 formatsNetpbm & raw pixels

4.6 KB · identical · alpha filled whitePortable pixmap

.ppmPortable pixmapRGB, no compressionP6ImageMagickImageMagicknot tested yet

201 B · 5.8 dB · alpha filled white · 1-bit by designPortable bitmap

.pbmPortable bitmap1-bit black and whiteP4ImageMagickImageMagicknot tested yet

1.5 KB · 13.8 dB · alpha filled white · greyscale by designPortable graymap

.pgmPortable graymapgreyscaleP5ImageMagickImageMagicknot tested yet

4.6 KB · identical · alpha filled whitePortable anymap

.pnmPortable anymapany of the three aboveP1: P6ImageMagickImageMagicknot tested yet

6.2 KB · identical · alpha keptPortable arbitrary map

.pamPortable arbitrary mapwith alphaP7ImageMagickImageMagicknot tested yet

4.6 KB · identical · alpha filled whiteRaw RGB

.rgbRaw RGBbare RGB bytes; size must be knownnone (headerless)ImageMagickImageMagicknot tested yet

1.5 KB · 13.8 dB · alpha filled white · greyscale by designRaw pixels

.rawRaw pixelsbare greyscale bytesnone (headerless)ImageMagickImageMagicknot tested yet

12.3 KB · identical · alpha keptfarbfeld

.fffarbfeld16-bit RGBA, suckless66 61 72 62 66 65 6C 64ImageMagickImageMagicknot tested yet

Legacy6 formats

.6 formatsLegacy

3.7 KB · identical · alpha filled whitePCX

.pcxPCXZSoft Paintbrush, DOS0A 0? 01ImageMagickImageMagicknot tested yet

4.2 KB · identical · alpha filled whitePICT

.pictPICTclassic Mac QuickDraw512-byte gap, then sizeImageMagickImageMagicknot tested yet

4.2 KB · identical · alpha filled whitePICT (.pct)

.pctPICT (.pct)same as .pict512-byte gap, then sizeImageMagickImageMagicknot tested yet

788.5 KB · 8.1 dB · alpha filled white · Photo CD fixed sizesKodak Photo CD

.pcdKodak Photo CD1990s CD scansPCD_IPI at 2048ImageMagickImageMagicknot tested yet

567 B · 12.3 dB · alpha filled white · Palm greyscalePalm database

.pdbPalm databasePalm OS image viewerVimg at 60ImageMagickImageMagicknot tested yet

1.6 KB · 25.8 dB · alpha filled white · Palm palettePalm bitmap

.palmPalm bitmapPalm OS graphicswidth, height, row bytesImageMagickImageMagicknot tested yet

Specialised8 formats

.8 formatsSpecialised

6.2 KB · identical · alpha keptVIPS

.vipsVIPSlibvips native08 F2 A6 B6ImageMagickImageMagicknot tested yet

7.2 KB · identical · alpha keptVIFF

.viffVIFFKhoros visualisationAB 01ImageMagickImageMagicknot tested yet

688 B · identical · alpha keptMNG

.mngMNGmultiple-image PNG8A 4D 4E 47ImageMagickImageMagicknot tested yet

4.6 KB · identical · alpha filled whiteMTV

.mtvMTVMTV ray tracer"w h" as textImageMagickImageMagicknot tested yet

196 B · 5.8 dB · alpha filled white · 1-bit by designWireless bitmap

.wbmpWireless bitmap1-bit WAP phones00 00ImageMagickImageMagicknot tested yet

1.6 KB · 13.8 dB · alpha filled white · greyscale by designPGX

.pgxPGXJPEG 2000 test imagesPG MLImageMagickImageMagicknot tested yet

3.1 KB · 11.1 dB · alpha filled white · 4:2:2 chromaPAL

.palPALraw 4:2:2 YUVnone (headerless)ImageMagickImageMagicknot tested yet

1.9 KB written, could not reopenColour map

.mapColour mappalette plus indicesnone (headerless)ImageMagickImageMagicknot tested yet

Camera RAW7 formats

.7 formatsCamera RAW

opens only, nothing to writeCanon RAW

.cr2Canon RAWCanon sensor data49 49 2A 00 … CRImageMagickImageMagicknot tested yet

opens only, nothing to writeDigital Negative

.dngDigital NegativeAdobe open RAW49 49 2A 00ImageMagickImageMagicknot tested yet

opens only, nothing to writeNikon RAW

.nefNikon RAWNikon sensor data4D 4D 00 2AImageMagickImageMagicknot tested yet

opens only, nothing to writeSony RAW

.arwSony RAWSony sensor data49 49 2A 00ImageMagickImageMagicknot tested yet

opens only, nothing to writeFujifilm RAW

.rafFujifilm RAWFujifilm sensor dataFUJIFILMCCD-RAWImageMagickImageMagicknot tested yet

opens only, nothing to writeOlympus RAW

.orfOlympus RAWOlympus / OM sensor data49 49 52 4FImageMagickImageMagicknot tested yet

opens only, nothing to writePanasonic RAW

.rw2Panasonic RAWPanasonic sensor data49 49 55 00ImageMagickImageMagicknot tested yet

1986TIFFAldus and Microsoft publish TIFF for scanners and desktop publishing.

1987GIFCompuServe’s 256-colour LZW format; 89a adds transparency and animation in 1989.

1992JPEGITU-T T.81: DCT compression for photographs.

1996PNG 1.0Patent-free replacement for GIF, with full alpha, after the Unisys LZW licensing dispute.

2010WebPGoogle derives a still-image format from the VP8 video codec.

2017HEIC on iPhoneiOS 11 makes HEVC-coded HEIF the camera default.

2019AVIF 1.0AV1 stills in the HEIF container, royalty-free.

2022JPEG XLISO/IEC 18181 published; browser support stays patchy.

2024AVIF everywhereEdge adds AVIF decoding, so all major browsers read it.

Every format this converter can read or write, with the bytes that identify it on disk. The measured columns above fill in when you run the test on your own image.

Web & everyday 10 formats

Extension	Format	File signature	Typical use
`.jpg`	JPEG	`FF D8 FF`	photos; opens on every device
`.png`	PNG	`89 50 4E 47`	lossless with transparency
`.webp`	WebP	`RIFF … WEBP`	small web images, alpha
`.avif`	AVIF	`… ftypavif`	AV1 stills, smallest
`.gif`	GIF	`47 49 46 38`	256 colours, animation
`.svg`	SVG	`<svg`	vector; written with the pixels inside
`.svgz`	SVGZ	`1F 8B`	gzip-compressed SVG
`.apng`	Animated PNG	`89 50 4E 47 (acTL)`	PNG with frames
`.jxl`	JPEG XL	`FF 0A / JXL`	ISO 18181, lossless JPEG recompression
`.qoi`	QOI	`71 6F 69 66`	Quite OK Image, fast lossless

Print & professional 12 formats

Extension	Format	File signature	Typical use
`.tiff`	TIFF	`49 49 2A 00`	print, scans, master files
`.tif`	TIFF (.tif)	`49 49 2A 00`	same format, short extension
`.psd`	Photoshop	`38 42 50 53`	Photoshop document, flattened
`.xcf`	GIMP	`67 69 6D 70`	GIMP project file
`.exr`	OpenEXR	`76 2F 31 01`	float HDR for VFX
`.hdr`	Radiance HDR	`#?RADIANCE`	RGBE high dynamic range
`.dds`	DirectDraw Surface	`44 44 53 20`	GPU textures for games
`.tga`	Targa	`footer TRUEVISION`	3D and game pipelines
`.jp2`	JPEG 2000	`00 00 00 0C 6A 50`	wavelet; medical, archives, cinema
`.jps`	Stereo JPEG	`FF D8 FF`	side-by-side 3D photo
`.pfm`	Portable float map	`PF / Pf`	32-bit float pixels
`.fts`	FITS	`SIMPLE =`	astronomy data

Phone photos & JPEG names 7 formats

Extension	Format	File signature	Typical use
`.heic`	HEIC	`… ftypheic`	iPhone photos (HEVC)
`.heif`	HEIF	`… ftypmif1`	the container behind HEIC
`.jpeg`	JPEG (.jpeg)	`FF D8 FF`	same bytes as .jpg
`.jpe`	JPEG (.jpe)	`FF D8 FF`	same bytes as .jpg
`.jfif`	JFIF	`FF D8 FF E0 … JFIF`	same bytes as .jpg
`.jfi`	JPEG (.jfi)	`FF D8 FF`	same bytes as .jpg
`.jif`	JPEG (.jif)	`FF D8 FF`	same bytes as .jpg

Windows & icons 5 formats

Extension	Format	File signature	Typical use
`.bmp`	BMP	`42 4D`	uncompressed Windows bitmap
`.dib`	DIB	`BITMAPINFOHEADER`	BMP without the file header
`.ico`	ICO	`00 00 01 00`	favicons, 16–256 px
`.cur`	Cursor	`00 00 02 00`	Windows mouse cursor
`.icns`	Apple icon	`69 63 6E 73`	macOS app icons

Unix & X11 7 formats

Extension	Format	File signature	Typical use
`.xpm`	X PixMap	`/* XPM */`	C source with a colour table
`.xbm`	X BitMap	`#define`	1-bit C source
`.xwd`	X Window dump	`header size, version 7`	X11 screen capture
`.xv`	XV thumbnail	`P7 332`	xv viewer thumbnails
`.sun`	Sun Raster	`59 A6 6A 95`	SunOS workstations
`.sgi`	SGI	`01 DA`	Silicon Graphics, RLE
`.ras`	Sun Raster (.ras)	`59 A6 6A 95`	same as .sun

Netpbm & raw pixels 8 formats

Extension	Format	File signature	Typical use
`.ppm`	Portable pixmap	`P6`	RGB, no compression
`.pbm`	Portable bitmap	`P4`	1-bit black and white
`.pgm`	Portable graymap	`P5`	greyscale
`.pnm`	Portable anymap	`P1–P6`	any of the three above
`.pam`	Portable arbitrary map	`P7`	with alpha
`.rgb`	Raw RGB	`none (headerless)`	bare RGB bytes; size must be known
`.raw`	Raw pixels	`none (headerless)`	bare greyscale bytes
`.ff`	farbfeld	`66 61 72 62 66 65 6C 64`	16-bit RGBA, suckless

Legacy 6 formats

Extension	Format	File signature	Typical use
`.pcx`	PCX	`0A 0? 01`	ZSoft Paintbrush, DOS
`.pict`	PICT	`512-byte gap, then size`	classic Mac QuickDraw
`.pct`	PICT (.pct)	`512-byte gap, then size`	same as .pict
`.pcd`	Kodak Photo CD	`PCD_IPI at 2048`	1990s CD scans
`.pdb`	Palm database	`Vimg at 60`	Palm OS image viewer
`.palm`	Palm bitmap	`width, height, row bytes`	Palm OS graphics

Specialised 8 formats

Extension	Format	File signature	Typical use
`.vips`	VIPS	`08 F2 A6 B6`	libvips native
`.viff`	VIFF	`AB 01`	Khoros visualisation
`.mng`	MNG	`8A 4D 4E 47`	multiple-image PNG
`.mtv`	MTV	`"w h" as text`	MTV ray tracer
`.wbmp`	Wireless bitmap	`00 00`	1-bit WAP phones
`.pgx`	PGX	`PG ML`	JPEG 2000 test images
`.pal`	PAL	`none (headerless)`	raw 4:2:2 YUV
`.map`	Colour map	`none (headerless)`	palette plus indices

Camera RAW 7 formats

Extension	Format	File signature	Typical use
`.cr2`	Canon RAW	`49 49 2A 00 … CR`	Canon sensor data
`.dng`	Digital Negative	`49 49 2A 00`	Adobe open RAW
`.nef`	Nikon RAW	`4D 4D 00 2A`	Nikon sensor data
`.arw`	Sony RAW	`49 49 2A 00`	Sony sensor data
`.raf`	Fujifilm RAW	`FUJIFILMCCD-RAW`	Fujifilm sensor data
`.orf`	Olympus RAW	`49 49 52 4F`	Olympus / OM sensor data
`.rw2`	Panasonic RAW	`49 49 55 00`	Panasonic sensor data

When changing the format isn't the whole job

compressImage compressorNeed a file under a size limit rather than a format? It searches qualities for a target in KB and measures SSIM on each try.photo.jpg · 4.1 MBarrow_forwardphoto.jpg · 500 KB photo_size_select_largeImage resizerExact dimensions with a choice of resampling filters, including Lanczos computed in JavaScript and gamma-correct averaging.4000×3000arrow_forward1200×900 · Lanczos-3 phone_iphoneHEIC to JPGOne iPhone photo, with its tiles, gain map and GPS read out, and a choice to strip location before saving.IMG_2041.heic · 2.4 MBarrow_forwardIMG_2041.jpg · no GPS starFavicon generatorA full favicon set (ICO, apple-touch, manifest icons and SVG) zipped with the HTML to paste in.logo.pngarrow_forwardfavicon.ico + 6 files picture_as_pdfImage to PDFPuts images on pages; JPEGs are embedded byte for byte rather than re-encoded.12 scans.jpgarrow_forwardscans.pdf · 12 pages categoryAll image toolsCodec bake-off with SSIM, JPEG marker and EXIF reader, and a 10-format reference.unknown.webparrow_forwardVP8L · 1-bit alpha

01TIFF Revision 6.0Adobe 02BMP: BITMAPV4HEADERMicrosoft Learn 03ICO file format (ICONDIR)Microsoft Learn 04Median cut colour quantisation (Heckbert, 1982)SIGGRAPH 05Image file type and format guideMDN Web Docs 06PNG SpecificationW3C 07WebP Compression TechniquesGoogle Developers 08ITU-T T.81: JPEG StandardITU 09AV1 Image File Format (AVIF)Alliance for Open Media 10GIF89a SpecificationW3C 11HTMLCanvasElement.toBlob()MDN Web Docs 12ZIP APPNOTE 6.3.10PKWARE