Photos Plus is an alternative to the system’s default image viewer, it supports many formats, and can batch convert to regular formats, add text, shapes, crop, etc.
Support formats as follow:
heic; svg; svgz; ttf; tiff; tif; tga; svgz; bmp; jpg; jpeg; png; gif;jp2;ppm;nef;svg;arw;crw;bmp2; threefr; threeg2; threegp; a;arw;avs; b; bgr; bgra; bgro; bmp; bmp2; bmp3; c; cal; cals; canvas; caption; cin; clip; cmyk; cmyka; cr2; crw; cur; cut; dcm; dcr; dcx; dds; dfont; dib; dng; dpx; dxt1; dxt5; epdf; epi; eps; epsf; epsi; ept; ept2; ept3; erf; fax; file; fits; fractal; ftp; fts; g; g3; g4; gif; gif87; gradient; gray; graya; group4; hald; hdr; heic; hrz; http; https; icb; ico; icon; iiq; inline; ipl; j2c; j2k; jng; jnx; jp2; jpc; jpe; jpeg; jpg; jpm; jps; jpt; k; k25; kdc; label; m; m2v; mac; map; mask; mat; mef; miff;mng; mono; mpc; mrw; msl; msvg; mtv; mvg; nef; nrw; null; o; orf; otb; otf; pal; palm; pam; pango; pattern; pbm; pcd; pcds; pcl; pct; pcx;pdfa; pef; pes; pfa; pfb; pfm; pgm; pgx; picon; pict; pix; pjpeg; plasma; png; png00; png24; png32; png48; png64; png8; pnm; ppm;ptif; pwp; r; radialgradient; raf; ras; raw; rgb; rgba; rgbo; rgf; rla; rle; rmf; rw2; scr; screenshot; sct; sfw; sgi; six; sixel; sr2;stegano; sun; text; tga; tif; tiff; tiff64; tile; tim; ttc; ttf; txt; uyvy; vda; vicar; vid; viff; vips; vst; wbmp; wpg; x3f; xbm; xc; xcf; xpm; xv; y; ycbcr; ycbcra; yuv;emf; exr; flif; wmf; webp