努力鸭
Online Convert Free 是一个免费的在线文件格式转换工具，支持上百种格式进行转换，它不仅提供了包括文件、图像、音频、书籍、压缩文件、视频在内的在线格式转换器，还拥有图像裁剪、图像压缩、图像裁剪、OCR 识别等多种非常实用的小工具。除此以外，还支持批量上传文件，转换速度快，转换效果好，基本可以满足日常工作中的格式转换的需求。
支持的格式
网站支持文件格式转换、图像格式转换、音频格式转换、书籍格式转换、压缩文件格式转换、视频格式转换，基本你能遇到的他都可以处理，非常强大！
图像
aai, art, arw, avs, bmp, bpg, brf, cals, cgm, cr2, crw, cur, cut, dcm, dcr, dcx, dib, dng, emf, fax, gif, hdr, hrz, ico, info, isobrl, isobrl6, jng, jpeg, mat, mng, mono, mpc, mrw, mtv, mvg, nef, orf, otb, p7, palm, pam, pbm, pcx, pes, pfa, pfb, pfm, pgm, picon, pict, pix, png, pnm, ppm, psb, psd, ptif, pwp, rad, raf, rgf, rla, rle, sct, sfw, sgi, sun, svg, tga, tiff, tim, ttf, ubrl, ubrl6, uil, uyvy, vacar, viff, wbpm, wpg, x3f, xbm, xcf, xmp, xwd, dxf, eps, pcd, pct, wmf, jpg, ai, tif, dst, dds, dwg, raw, webp, cdr, heic, dfont, ps, nrw, plt, jfif, heif, apng, avif, cad, psp, pat, pic, cam, vss, srf, dps, mix, pal, muse, vsd, jpe, jp2, rgb, jar, mjpeg, av1, map, jif, shn, tta, ace, afm, wve, cff, wmz, xa, dss, sd2
书籍
djvu, fb2, epub, mobi, azw3, lit, snb, tcr, azw, prc
文件
epdf, html, pdf, shtml, doc, docx, xls, xlsx, pptx, odt, ott, sxw, stw, docm, xml, wps, dot, hwp, rtf, txt, wpd, dotm, pages, lrf, sdw, ods, ots, sxc, stc, xlt, csv, wk1, wks, sdc, dbf, odp, odg, otp, sxi, sti, pps, pot, sda, sdd, sdp, pptm, ppsx, ppt, dotx, pdb, xps, oxps, cbr, cbz, htm, key, numbers, pub, woff, msg, eml, otf, word, bpm, fig, one, jnt, exp, css, cfm, osm, asd, contact, cal, spc, mac, sec, tax, site, style, rtl, olm, max, ind, epf, act, fit, sla, sat, bms, cnc, sam, dex, pez, ipynb, aspx, dat, dwf, latex, wv, rb, w64, ac3, ra, d, jps, vqf, exr, dts, gsm, cab, bin, jbg, vox, xpm, yuv, abw, potx, ape, deb, sln, sr2, avr, voc, smp, rpm
压缩文件
tar.bz2, tar.gz, rar, tar, tbz2, tgz, zip, 7z, xz, iso, arc
音频
mp3, wav, m4a, wma, ogg, flac, aac, aiff, opus, oga, adts, amr, m4r, alac, caf, m4p, m4b, midi, weba, all, band, ram, als, sid, cfa, cpr, abc, wax, spx, vivo, mp2, tak, snd, au, ppsm, kdc, pef, rgba, rw2, cvs
视频
mp4, 3gp, avchd, avi, flv, m2ts, m4v, mkv, mov, mts, mxf, swf, ts, vob, webm, wmv, 3g2, aaf, asf, divx, dv, f4v, hevc, m2v, mod, xvid, rmvb, rm, ogv, mpg, mpeg, wtv, video, m4s, movie, tvs, exo, cpi, dash, dmx, smi, wbmp, sfd, cdda, dbk