Previewing attachments without leaving RedactBox

Click any file in the left rail of the Attachments tab and the preview opens in the right pane. Each file type is rendered with a viewer tuned to that format — you don't have to download anything to see what's inside.

PDFs

PDF attachments render page by page in an embedded viewer. You can scroll between pages, jump to a specific page using the toolbar at the bottom, and zoom in or out. Very large PDFs (hundreds of pages) load progressively — pages render as you scroll into them, so the first page is visible almost immediately.

Images

JPG, PNG, GIF, WebP and BMP files preview at their natural size, scaled down to fit the pane. There's no editing — this is a viewer, not an image editor — but you can right-click to save a copy if your browser allows it.

Word documents (.docx)

.docx files render with their original formatting where possible: headings, paragraph styles, bold/italic, lists, tables and inline images. This is the same kind of rendering Word for the Web does. Some complex layouts (heavy use of text boxes, comments, tracked changes, equations) may not render perfectly — if a preview looks off, downloading the file and opening it in Word is the reliable fallback.

Spreadsheets (.xlsx, .xls)

Spreadsheets render with all sheets accessible from a tab strip at the bottom of the preview. Click a sheet name to switch. Formulas show their computed values, not the formula text. Charts and embedded objects are not rendered in preview — download the file to inspect those.

Plain text and code

.txt, .md, .log, .json, .xml and .csv files render as preformatted text with monospace font. There's no syntax highlighting, but line breaks and indentation are preserved.

"No preview" files

For file types we can't safely render in the browser, the preview pane shows a Preview not available message with a Download button. This is intentional — guessing at file content (rendering an executable, for example, or trying to display a corrupted file) would either be unsafe or produce a confusing result. The download is always available.

If a preview fails to load

Occasionally a file is corrupted, password-protected, or uses a format variant that the in-browser renderer can't handle. When that happens, you'll see a Preview failed to load state with a short explanation and a Download button — so you can still pull the file down and open it in a dedicated application.