It cannot upload your files
The page ships a security policy that blocks every outgoing connection. It is not a promise you have to trust — open your browser's network tab and see for yourself.
Clean your files
The guarantee is one line
Every page ships this security policy. The browser blocks any outgoing connection — even one this code tried to make. Open your network tab and watch it stay empty.
response headers● enforced
content-security-policy:
default-src 'self';
connect-src 'none';
object-src 'none';
base-uri 'none';
form-action 'none';What KillEXIF can clean
A privacy tool that lies to you is worse than no tool at all. This is exactly what works today, what is on the way, and what will not work.
Images
JPEGjpg jpeg
WorkingPNGpng
WorkingWebPwebp
WorkingGIFgif
WorkingHEIC/AVIFheic heif avif
WorkingTIFFtif tiff
WorkingRAW (CR2, NEF, ARW, DNG)cr2 nef arw dng
Not supportedWhy not — RAW (CR2, NEF, ARW, DNG)
In a RAW file the metadata is interwoven with the image data: the IFDs point straight at the pixels. Cleaning them means rewriting those pointers, and one mistake leaves the negative unusable. Export to JPEG or TIFF and clean that instead.
PSDpsd
Not supportedWhy not — PSD
Photoshop's format scatters metadata across layers and resources. Flatten and export before cleaning.
Documents
PDFpdf
WorkingWord (DOCX)docx
WorkingExcel (XLSX)xlsx
WorkingPowerPoint (PPTX)pptx
WorkingOpenDocumentodt ods odp
WorkingDOC, XLS, PPT (Office 97)doc xls ppt
Not supportedWhy not — DOC, XLS, PPT (Office 97)
The old binary Office format keeps metadata in OLE streams that also hold deleted text. Open them and save as DOCX, XLSX or PPTX before cleaning.
Audio
MP3mp3
WorkingFLACflac
WorkingWAVwav
WorkingM4Am4a
WorkingAAC (ADTS)aac
Not supportedWhy not — AAC (ADTS)
A bare .aac is a run of ADTS frames: it has nowhere to store metadata, so there is nothing to remove. If yours carries tags, it is really an M4A with the extension changed.
OGG / Opus / Speexogg oga opus spx
WorkingMatroska (MKA)mka
WorkingVideo
MP4mp4 m4v
WorkingQuickTime (MOV)mov
WorkingAVIavi
WorkingMKV / WebMmkv webm
WorkingOgg (OGV)ogv
WorkingWMV, FLV, MPG, VOBwmv flv mpg mpeg vob 3gp
Not supportedWhy not — WMV, FLV, MPG, VOB
Legacy containers with very little use today. Convert to MP4 and clean the result.
Archives
ZIPzip
WorkingRAR, 7zrar 7z
Not supportedWhy not — RAR, 7z
Both use compressed indexes that would have to be rebuilt from scratch. Repack as ZIP if you need the container cleaned.
TAR, GZ, BZ2, XZtar gz bz2 xz
Not supportedWhy not — TAR, GZ, BZ2, XZ
These formats barely store metadata of their own beyond timestamps. What matters is the files inside: extract them and clean them separately.
Why KillEXIF
Your quality stays intact
Most tools decode and re-encode your image, quietly degrading it. KillEXIF removes only the metadata blocks and leaves the compressed data untouched, byte for byte.
It checks its own work
After cleaning, every file is analysed again and the result is shown to you. If something survived, you will know.
It tells you what it cannot do
Some formats cannot be cleaned safely. Instead of handing you back the original and calling it clean, KillEXIF says so.
Guides
What your files are hiding, and what you can do about it.
Removing metadata without losing quality: why re-encoding is not cleaning
Many ways of “removing” metadata actually recompress the photo, and some do not even remove it. We measured it: what changes and how to avoid it.
EXIF remover: KillEXIF, exif.es and exifremover.com, compared and tested
Three sites for removing EXIF, tested with the same files: what they upload, what they remove, whether they re-encode and how they differ. Two are ours, and we say so.
Do WhatsApp, Instagram and Telegram strip the location from your photos? What is known
What WhatsApp, Instagram, Telegram, X, Apple and Google say about the metadata in the photos you send, what others have measured and what nobody has checked yet.
Why remove metadata: four real risks, with documented cases
What your photos and documents say about you without you seeing it, and four real cases where metadata gave someone away. Without exaggerating: with sources.
Now on the Mac App Store and the Microsoft Store
KillEXIF for Mac and Windows
A native app, now on the Mac App Store and the Microsoft Store. Cleaning straight from Finder or File Explorer, watched folders, files with no size ceiling — and the website stays free and complete.
What the app does- Clean from Finder or File Explorer
- Watched folders
- No size limit
- Profiles and batches