fileformer
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Converters8 file families · 44 direct conversions
What changes in a conversionarrow_forward
image57 formats
Image Converterarrow_forwardPhotos, screenshots, icons and graphics. Change format, cut size for the web, or rescue iPhone HEIC photos.
swap_horizPopularall 7
HEIC → JPGAVIF → JPGBMP → JPG
movie30 formats
Video Converterarrow_forwardScreen recordings, phone clips and exports. Re-wrap or re-encode for any player, or pull audio and GIFs out.
swap_horizPopularall 10
Video → GIFAVI → MP4GIF → MP4
graphic_eq42 formats
Audio Converterarrow_forwardVoice memos, podcasts and music. Go lossless for editing or compact for sharing, without touching quality twice.
swap_horizPopularall 7
AAC → MP3FLAC → M4AFLAC → MP3
description28 formats
Document Converterarrow_forwardContracts, spreadsheets and reports. Make PDFs editable, lock Word files into PDFs, or pull clean data out of tables.
swap_horizPopularall 8
Image → PDFPDF → JPGPresentation Converter
menu_book11 formats
Ebook Converterarrow_forwardBooks and long reads. Move titles between Kindle, Kobo and Apple Books, or read them right here in the browser.
swap_horizPopularall 0
folder_zip16 formats
Archive Converterarrow_forwardBundles of files. Open RAR and 7Z without installing anything, or repack into ZIP so anyone can open it.
swap_horizPopularall 4
RAR → ZIP7Z → ZIPTAR.GZ → ZIP
font_download8 formats
Font Converterarrow_forwardTypefaces for design and the web. Turn desktop fonts into fast WOFF2 for sites, or back into TTF for apps.
swap_horizPopularall 4
TTF → WOFF2OTF → TTFWOFF2 → TTF
slideshow10 formats
Presentation Converterarrow_forwardDecks from PowerPoint, Keynote and Google Slides. Swap between them or flatten into a PDF anyone can open.
swap_horizPopularall 4
PPTX → PDFKEY → PPTXPPT → PPTX
Compressors8 file types · same format, smaller fileAlso:GIF Compressor·SVG Optimizer
How compression worksarrow_forward
imagearrow_forward
Image CompressorHit a KB target with measured SSIM
targetKB target or quality
JPGPNGWebPGIF
moviearrow_forward
Video CompressorFit a size limit with corrective passes
targetMB limit or preset
MP4MOVMKVAVI
graphic_eqarrow_forward
Audio CompressorBitrate against the measured cut-off
target32-320 kbps
MP3WAVFLACAAC
descriptionarrow_forward
Document CompressorResample scans, recompress streams
targetImage dpi
PDFDOCXODT
co_presentarrow_forward
Presentation CompressorShrink the photos and media inside slides
targetImage size in slides
PPTXPPTODP
menu_bookarrow_forward
Ebook CompressorSmaller EPUBs without losing chapters
targetImage quality
EPUBMOBIAZW3
folder_ziparrow_forward
Archive CompressorPack files at the best ratio
targetMethod and level
ZIP7ZTARGZ
text_fieldsarrow_forward
Font CompressorWeb-ready fonts for fast loading
targetOutput and subset
TTFOTFWOFFWOFF2
Tool hubs9 hubs · every tool, grouped, with an inspector on each
imageImage toolsEdit, crop, resize, redact and inspect photoscodec bake-offarrow_forwardmovieVideo toolsTrim, edit, compress and turn clips into GIFscontainer inspectorarrow_forwardgraphic_eqAudio toolsClip, join, record, mix and measure loudnessLUFS meterarrow_forwardpicture_as_pdfPDF toolsMerge, split, sign, protect and watermark PDFsstructure inspectorarrow_forwarddescriptionDocument toolsWord, Excel and CSV files, read down to the XMLhidden-data checkarrow_forwardmenu_bookEbook toolsEPUB, MOBI and comics checked and convertedreflow labarrow_forwardfolder_zipArchive toolsOpen, check and rebuild ZIP, TAR and 7Z safelysafety inspectorarrow_forwarddata_objectDeveloper toolsJSON, Base64, regex, hashes, JWT, colour and DNS20+ toolsarrow_forwardcalculateCalculatorsInterest, loans, VAT, dates, percentages and paceexact mathsarrow_forward
REFERENCEdictionaryFormats explainedWhat each format is forarrow_forwardschoolCore conceptsCodecs, containers, compressionarrow_forwardmemoryHow processing worksWhat happens to your filearrow_forward
GUIDESchecklistHow-to guidesStep-by-step walkthroughsarrow_forwarddevicesPlatform guidesTips for iPhone, Windows, Macarrow_forwardcompareComparisonsTwo formats measured side by sidearrow_forward
newspaperBlogNews, release notes and deep divesarrow_forward
lightbulbpopular comparisonJPG vs PNG: which one should this picture be?Measured on real photos, logos and screenshots, with a rule you can apply in a second.Read the comparisonarrow_forward
home/about

One toolkit for the files you deal with every day.

FileFormer helps people convert, compress and prepare files in the browser, from a PDF for a form to a font for a website. Built and run by a small team at Kalenux in Istanbul.

200+formats
100+tools
9languages
0sign-ups needed
~/what-we-do

Grouped by the job, not the jargon.

Common file tasks are organised into practical workflows, so you find the right tool without knowing what a codec is.

swap_horizall families
File conversionFormat preparation across images, video, audio, documents, ebooks, archives, fonts and presentations.
compress8 categories
File compressorsPrepare images, media, PDFs, documents, archives, slides, ebooks and fonts for sharing or reuse.
image12 tools
Image toolsConversion, compression, resizing, cropping, rotation, watermarking, metadata review and web-performance prep.
code15 tools
Developer toolsJSON, Base64, URL encoding, UUIDs, hashes, regex, minifiers, robots/sitemap helpers, DNS, SSL and headers.
calculate8 tools
Calculators & convertersDate and time checks, file-size and transfer estimates, units, percentages and simple randomization.
text_fields14 tools
Text & general toolsCounting, casing, duplicate cleanup, HTML entities, Unicode, placeholder text, typing checks and QR codes.
~/how-it-runs

Your browser does the work.

Every converter, compressor and editor runs in your tab, using JavaScript, WebAssembly and the browser's own image, audio and video encoders. Your file is processed on your own device, from opening it to saving the result. Where a browser has a limit, such as writing MP3, the page tells you plainly and suggests the closest option.

Watch it happen, livearrow_forward
01Read in the tabOpening or dropping a file loads its bytes into this tab’s memory.
02Processed on your processorDecoders, encoders and file writers run on this device. Big jobs use your CPU and take as long as it takes.
03Saved by youThe result is a file held by this tab. Download it, or close the tab and it's gone.
swap_vertWhat does use the networkFonts and code libraries coming down to the page. Two tools send what you type by design: DNS Lookup (the domain) and the password breach check (5 hash characters).
~/stack

The technology behind it.

Industry-standard open-source tools and modern infrastructure: chosen for speed and for keeping file work on your device.

dnsInfrastructure
Handles routing, format catalogs and tool delivery, never your files. Hosted on EU-based infrastructure.
GoGinPostgreSQL 15RedisEU hosting
memoryBrowser processing
Conversion tools use vanilla JavaScript and WebAssembly for speed without framework overhead. Images use Canvas and Web Workers so the page never freezes.
WebAssemblyVanilla JSCanvas APIWeb Workers
translateFrontend
Built on the in-house Kalenuxer framework with server-side rendering in 9 languages.
KalenuxerSSR9 languages
~/who

Who runs FileFormer

EB
Emir Baycan
Founder & developer
OperatorKalenux Bilişim Hizmetleri Ticaret Ltd. Şti.
LocationIstanbul, Turkey
Emaileditorial@fileformer.com
edit_note

Spotted something wrong?

Corrections, editorial questions, source suggestions, product-profile or media-kit requests, we read everything.

mailContact usBrowse all tools