Browse Tools Top 100

What is .AQQ ?

19k+ file extensions explained, verified on real systems and kept up to date - since 2014.

Trending now: .AQQ.BIN.MD.RPMSG.CRDOWNLOAD
Drop any file here or browse read locally · nothing is uploaded

Identify an unknown file in one second

Analyzed in your browser. The file never leaves your device - no upload, no server.
Real signature check. We compare magic bytes against 1,900 known formats - renamed files can't hide.
Instant answer. Format name, safety notes and programs that open it.

File of the day

September 22, 2026
.CPI
AVCHD Clip Information File
Video Files
updated Jun 17, 2026

A .cpi file contains information about a video stream and the metadata that describe it - it does not hold any video or audio data itself. .cpi files are sidecar files within the proprietary AVCHD structure used by High Definition digital cameras from Sony,…

SIGNATURE48444D56"HDMV" at offset 0
OPENS ONLinuxMac OSmacOSWindows
See full details

Browse by category

All categories
1k+Game FilesOBB, PAK, ROFL, PACKAGE… 1k+Data FilesPKPASS, DAT, JSON, RIS… 1k+Settings FilesICA, DS_STORE, WMZ, CFG… 1k+Developer FilesDO, MD, HEX, XSD… 771Audio FilesOPUS, M3U, M3U8, WFP… 6213D Image FilesDCM, STEP, SKP, STP… 546Video FilesDAV, MKV, MP4, H264… 522Raster Image FilesJPG, PNG, TIF, ECW… 440Text FilesDOC, ODT, DOCX, GDOC…

Popular conversions

All conversion guides
.AVI .MPG40 programs .AVI .VOB36 programs .AVI .MPEG36 programs .MPG .MPEG32 programs .MPG .MOV32 programs .EMF .TIF30 programs
The database at a glance

File formats, the programs that open them and how to convert between them - with the technical details in one place. Browse everything →

19k+extensions
13k+programs
16k+conversions