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Supports: DOCX
Two questions bring people here. The first is easy: JPEG and JPG are the same format, and the three-letter spelling only exists because MS-DOS limited extensions to three characters — this converter lets you pick either spelling for the filename. The second question is the one worth thinking about: a Word page is sharp black text on flat white, which is the exact content type JPEG compression handles worst. The short answer is that JPEG is right when something downstream demands a .jpg/.jpeg file, and PNG is right almost everywhere else — and on text pages PNG is usually the smaller file too.
| Property | JPEG | PNG |
|---|---|---|
| Compression | Lossy, block-based DCT | Non-lossy; no block artefacts |
| Text edges | Ringing and haloing around glyphs, worse at lower quality | Pixel-exact, no artefacts |
| Typical size, 3-page A4 text document at 300 DPI | ~0.97 MB at the default preset (measured) | ~0.27 MB for the same pages (measured) |
| Transparency | Not supported; pages are flattened onto a colour | Full alpha channel |
| Re-saving repeatedly | Degrades each time | No degradation |
| Photographs and scans | Excellent — this is what it was designed for | Larger files, no quality gain |
| Universal acceptance | Yes, accepted anywhere an image is taken | Yes, on any modern platform |
| Best use here | Uploads and forms that insist on .jpg/.jpeg |
Anything where the text must stay crisp |
.jpg or .jpeg files..docx onto the page or click "+ Add Files" to browse. Add several documents to convert them together in one batch..jpeg or .jpg.| Preset | JPEG quality value | What it means for a text page |
|---|---|---|
| Highest | 100 | Largest file, no visible artefacts; rarely worth the size |
| Very High (Recommended) | 95 | Default. Artefacts invisible at normal viewing size |
| High | 90 | Slight softening at glyph edges under close inspection |
| Medium | 80 | Visible haloing around small text when zoomed |
| Low | 70 | Obvious ringing on body text |
| Very Low | 60 | Text noticeably degraded |
| Lowest | 50 | Smallest file; acceptable only for thumbnails |
None whatsoever — same format, same encoder, same bytes inside. The .jpg spelling dates to MS-DOS and early Windows, which allowed only three characters after the dot, while .jpeg is the name the format was given. Use the File extension control to pick whichever your destination expects; some older software and a few upload forms are fussy about seeing exactly one of them.
That is JPEG's lossy compression doing what it was designed to do. The format was built for photographs, where neighbouring pixels vary smoothly; it stores information in blocks and discards fine high-contrast detail. Black text on white is the highest-contrast content there is, so the discarded detail shows up as faint halos or ringing around glyph edges. Raise the Quality Preset to Highest, increase Conversion Quality so there are more pixels per letter, or switch to DOCX to PNG, which avoids lossy block compression altogether.
Usually not, which surprises people. JPEG wins decisively on photographs, but a document page is mostly a large flat white area with a small amount of black text, and PNG's compression handles that extremely efficiently. In our testing, a three-page A4 text document rendered at 300 DPI produced about 0.97 MB of JPEG at the default Very High preset, while the same pages written as true-colour PNG came to roughly 0.27 MB — smaller and free of block artefacts.
One image per page, since a JPEG holds exactly one image. A ten-page document therefore produces ten files, delivered together in a ZIP. If you want the whole document travelling as a single file, convert to PDF for a paginated document or to GIF for a single animated file that flips through the pages.
For viewing on a screen, 150 DPI is generally enough and keeps files light. The 300 DPI default matches standard print density and is the safe choice when you are not sure. Go to 600 DPI when the page has small type, fine rules, or footnotes that must survive zooming — but note the pixel count rises with the square of the DPI, so a 600 DPI page is four times the pixels of a 300 DPI one.
Not in JPEG — the format has no alpha channel at all, so a background colour is always painted in. The Image Transparency control sets which colour that is, defaulting to White, with 23 other named colours available. For a genuinely transparent background you need DOCX to PNG.
Switch Image Compression from Quality Preset to Specific file size and enter your target in KB or MB; the encoder then works backwards to a quality value that meets it. If the target is very small relative to the page, also reduce Conversion Quality or set an explicit Image resolution, because there is a limit to how much a lossy encoder can remove before text becomes unreadable. Reducing pixel count is gentler on legibility than crushing quality.
No. Once a page becomes an image, the text is pixels — you cannot select, copy, or search it, and neither can anything downstream unless it runs OCR. This applies to every image target, JPEG and PNG alike. When searchable text matters, convert to PDF, which keeps the text layer intact.
If the page is genuinely a photograph or contains scanned photographic content, JPEG at the Very High preset is the right call and the file will be well-behaved. If it is a normal Word document of headings and body text, PNG gives you cleaner glyph edges and, on that content, usually a smaller file. Choose JPEG here mainly when something downstream insists on the extension.