The Heureka indexing engine touches most files on a system's hard drive and records metadata into the local index. Files that can be opened and contain text will also be indexed and placed in the local index thus extending search capability into file content.

Heureka's engine supports thousands of file types. The below table represents nearly 500 of the most common file types supported.

Description	Kind	Extensions
3D Graphics/CAD	Drawings	3D, 3ds, c4d, dgn, dwfx, dxf, dwg, igs, plt, stp, lcf, max, skp, stl, u3d
Adobe Acrobat	Documents	pdf
Adobe Fonts	Fonts	bdf
Archive Files	Containers	mso, iso, cfs
Audio Files	Multimedia	3ga, aac, aiff, amr, ape, arf, asf, asx, cda, dvf, flac, gp3, gp4, gp5, gpx, logic, m4, m4a, m4b, m4p, m4r, m4v, midi, mp3, ogg, pcm, rec, snd, uax, wav, wma, rom
AWK Script	Scripts	awk
Batch Files	Scripts	cmd
Binary Files	Logs	dmp
Bitmap Files	Images	bmp, cpt, dds, dib, dng, dt2, emf, ico, icon, jpg, jpeg, pcx, pic, png, psd, raw, tga, thm, thmx, tif, tiff, wbmp, bdp, webp
Calendar Files	Calendars	ics
Compressed Files	Containers	001, 7z, 7zip, a00, a01, a02, a03, a04, a05, ace, air1, apk, appx, arc, arj, asec, bar, bin, c00, c01, cab, cbr, cbz, cso, deb, dlc, gz, gzip, hgx, inv, ipa, isz, jar, msu, nbh, pak, rar, prm, sis, sisx, sit, sitx, sitd, tar, tar.gx, tgx, uax, webarchive, xap, z01, z02, zip, zipx, zipp
Database Files	Databases	accdb, accdt, db, dbf, fdb, gdb, idx, mdb, dcb, mdbackup, mdf, sdf, sql, dat, sqlite, val, wdb
Document Files	Documents	abw, aww, chm, cnt, dbx, djvu, dot, docm, dotm, epub, gp4, ind, indd, key, keynote, mht, mpp, odf, ott, oxps, pages, pmd, pot, potx, pps, ppsx, pptm, pptx, prn, prproj, ps, pub, pwl, rep rtf, sdd, sdw, shs, snp, sxw, tpl, wimp, wpd, wps, wrl, xps
Digital Camera RAW	Images	arw, cr2, crw, dcr, dng, fpx, mrw, nef, ord, pcd, ptx, raf, raw, rw2
E-Book Files	E-Books	azw, azw3, cbr, cbz, epub, fb2, iba, ibooks, lit, mobi
Email Files	Email Messages	eml, emlx, msg
Encrypted Files	Encrypted	asec, crypt, ksd, pfx, pkpass, rem, tc
Financial Files	Financial	gdb, ofx, qif
Font Files	Fonts	eot, otf, ttc, ttf, woff
Game Related Files	Games	big, bik, cab, dat, dds, hi, lng, nes, pak, res, sav, save, rc2replay, sc2save, scn, scx, uax, wotreplay
GIS-GPS-MAP Files	Others	gpx, kml, kmz, map
Graphics Files	Graphics	abr, ai, ani, cdt, kjvu, eps, fla, fm, icns, ico, icon, info, mdi, odg, pic, prn, psb, psd, px, pzl, sup, vsd, vsdx, xmp
Internet Related Files	Internet	ashx, asp, aspx, atom, bc, bc!, class, crdownload, css, dlc, dtd, download, flv, gdoc, gen, gif, gsheet, gslides, htm, html, iap_xml, js, json, jsp, manifest, mf, mht, mhtml, opml, part, partial, php, png, rss, swf, torrent, url, webm, webp, xap, xhtml, xml, xul, xsd, xsl,
Java Files	Java	properties, jad, jks, jar
Image Load Files	Legal Image Loads	opt, lfp
Lotus Files	Lotus	nsf, wk1
Linux Files	Others	amx
Microsoft Access	Database	accdb
Microsoft Encrypted	Encrypted	nuspec, pfile
Microsoft Email Containers	Email Container	pst, ost
Microsoft Excel	Spreadsheets	xla, xls, xlsx, xlsm, xll, xlt, xlw
Microsoft Index Crawl	Container	crwl
Microsoft PowerPoint	Presentations	ppt, pptx
Microsoft System Files	System Files	01, 1, 2, 3, acm, ax, blf, c, cch, cdf-ms, cur, ignore, ini, lck, psmdcp, n01, n02, rdf
Microsoft Media Files	Multimedia	wmv
Microsoft Word Documents	Documents	doc, docx, dot
Microsoft vCard	Contacts	vcf
Microsoft Visio Files	Drawings	vsd
Mobile Phone Related Files	Mobile	apk, bbb, ipa, ipd, apk, ipsw, mdbackup, nbh, nbu, npf, rsc, sbf, sis, sisx, thm, xap, safariextz, xpi
Multimedia (video)	Multimedia	mpe
Program Executable Files	Executable	air, app, crx, application, appx, bat, bin, com, cpl, deb, dll, elf, exe, jar, js, lnk, msi, prg, rpm, shs, vbs, xap
Real Media Files	Multimedia	rm
Symantec License Files	License Files	slf
Spreadsheets	Spreadsheets	csv, cwss
Summation Load Files	Legal Load Files	dii
Temporary Files	Temp	tmp
Text Files	Text	rtf, txt, log, wpd
Thumbnail Image files	Images	thm
Vector Graphics Files	Graphics	ai, cdr, csh, csl, drw, emz, odg, pic, sda, svg, swf, wmf
Video Files	Multimedia	264, 3gs, 3gp, arf, asf, asx, avi, bik, dash, dvr, flv, h264, m2t, m2ts, m4, m4a, m4b, m4p, m4r, m4v, mkv, mod, mov, mp3, mp4, mpg, mpeg, mswmm, mts, ogv, prproj, rec, rmvb, swf, tod, tp, ts, vob, webm, wmv
Virtualization Software Files	Virtualization	ova, ovf, pvm, vdi, vhd, vmdk, vmem, vmwarevm, vmx
Windows Registry Files	Registry	reg
Windows Open Office Files	Open Office	rels
Windows Powershell Scripts	Scripts	ps1, psm1
Wordperfect for Windows	Documents	chk, w51

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