Contact Sheet Generator

The word contact sheet comes from film photography, where every negative on a roll was laid directly against a sheet of photo paper and exposed at once, producing a single page of same-size prints for review before deciding which frames were worth enlarging. The digital version keeps the same idea, one page, every photo, quick to scan, but trades the darkroom for a canvas element and adds things film never had, filenames, sequence numbers, and dimensions printed directly under each thumbnail.

That heritage is also why this tool defaults to showing every photo in full rather than cropping it to fill a uniform grid cell, the way a photo collage tool like Collage Maker would. A contact sheet's entire job is letting you see accurately, cropping away part of a frame during review risks hiding exactly the detail that matters, a distracting object at the edge, a subject's expression, a composition problem. The crop to fill option exists for people who want a cleaner, more uniform look instead, a portfolio-style overview rather than a proofing document, but it is a deliberate opt-in rather than the default. If you only need to combine a handful of photos into one finished image rather than review a whole batch, Merge Images is a simpler fit.

Choosing between Auto and a print page size

Auto sizing exists because most contact sheets today are reviewed on a screen, shared as a file, or attached to an email rather than physically printed, and a screen has no fixed page boundary to work within. Auto simply grows the canvas downward to fit however many photos are added at whatever thumbnail size looks right, which means a batch of 12 photos and a batch of 150 both produce a sheet exactly as tall as they need to be, no wasted space and no forced shrinking.

The print page presets exist for the other case, when a sheet genuinely needs to come out of a printer as one physical page. Choosing A4 or Letter works backward from the fixed page dimensions to compute the largest thumbnail size that still fits every photo, which naturally means adding more photos to a fixed page size shrinks every thumbnail a little to make room. Past a certain batch size that shrinking produces thumbnails too small to actually review, at which point the tool shows a warning rather than silently producing a sheet nobody could use, the fix is almost always either adding a column or two, or switching to Auto sizing and printing across multiple pages, or combining several sheets into one document afterward with Images to PDF.

Making the labels actually useful

Filenames and sequence numbers solve two different problems. A filename is unambiguous, it points at one specific file on disk with no possibility of confusion, which matters most when a contact sheet gets forwarded on to someone who also has access to the original files and needs to open a specific one. A sequence number is faster to say and faster to read back, which matters most in a live conversation or a quick email, "I like 4, 12 and 19" is a lot less friction than typing out three full filenames. Both are on by default for exactly that reason, they solve different moments in the same review process. If you need deeper detail on one specific photo, camera model, GPS location, full EXIF, this tool intentionally skips that to stay fast on large batches, the image metadata viewer covers that for a single file instead.