Free online photography tools
Depth-of-field calculators, exposure tools, EXIF editors, contact sheets, and photo GPS mapping.
This is a small, deliberate set: two calculators that answer questions on location and three tools that work on the files you bring home. Depth of Field Calculator uses the standard circle-of-confusion values for each format — 0.043 mm for medium format, 0.029 mm for full frame, 0.019 mm for APS-C in both the 1.5x Nikon and Sony and the 1.6x Canon flavours, 0.015 mm for Micro Four Thirds and 0.011 mm for a one-inch sensor — and returns near and far limits, total depth and the hyperfocal distance for a focal length, aperture and subject distance you set. Change the sensor and the numbers move, which is the point: the same 50 mm at f/2.8 behaves very differently on a phone-sized sensor than on full frame. Exposure Calculator works in stops. It computes EV from ISO, aperture and shutter speed, lists equivalent exposures that hold the same brightness, applies compensation from minus three to plus three stops, and adds the correction for ND filters, which is where long-exposure arithmetic usually goes wrong. A Sunny 16 reference sits alongside it for the times you are metering by eye. On the file side, EXIF Batch Editor reads the metadata block of JPEG images and rewrites it with piexifjs, so you can retitle, re-attribute, change dates or strip fields across a whole shoot at once without re-encoding the pixels. Contact Sheet arranges your selects into a printable grid — 3x3, 4x5, 5x6, 6x8, 8x10 or a custom layout — draws it on a canvas at page size and downloads a PNG, the digital equivalent of a proof sheet. Photo GPS Map reads GPS coordinates from JPEG and TIFF files, drops a pin for each frame on an OpenStreetMap layer and exports the set as CSV, GeoJSON or KML. The photos themselves never leave your machine; the map view does request tile images from the OpenStreetMap tile servers, so the area you pan to is visible to them, while the pictures and their coordinates are not.
5 tools · always free · no account needed
Depth of Field Calculator
Calculate DoF, hyperfocal distance, and focus limits
Exposure Calculator
Find equivalent exposures and ND filter calculations
EXIF Batch Editor
Edit EXIF metadata across multiple images at once
Contact Sheet
Generate thumbnail grid proof sheets from images
Photo GPS Map
Upload photos and plot their GPS locations on a map
How to choose the right tool
Two of these belong on your phone while you are shooting and three belong at the desk. Before a shot that has to be sharp front to back, Depth of Field Calculator tells you whether f/8 is enough at your distance and where the hyperfocal point sits; for a daylight long exposure, Exposure Calculator converts the metered reading plus a six or ten stop ND into the shutter speed you actually need. Afterwards, run EXIF Batch Editor first if the shoot needs consistent copyright, artist and description fields, or if you are about to hand files to a client and want the camera serial and location gone. Contact Sheet is for review and delivery: a single sheet of thumbnails with filenames is easier to mark up with an editor than a folder of full-size frames. Photo GPS Map is the one to open when you want to know where a set was taken, to check that a camera's GPS was actually recording, or to hand a location list to someone in CSV, GeoJSON or KML form.
Frequently asked questions
Which sensor sizes does the depth of field calculator cover?
Medium format at 44 by 33 mm, full frame at 36 by 24 mm, APS-C in both variants — 23.5 by 15.6 mm with a 1.5x crop for Nikon and Sony and 22.3 by 14.9 mm with a 1.6x crop for Canon — Micro Four Thirds at 17.3 by 13 mm, and one-inch at 13.2 by 8.8 mm. Each carries its own circle of confusion, which is what makes the depth figures differ between formats at identical settings.
Does editing EXIF re-compress my JPEG?
No. piexifjs rewrites the metadata segment of the JPEG and leaves the compressed image data untouched, so the pixels you get back are bit-identical to the ones you put in. That is the reason to do metadata work here rather than by re-exporting from an editor, which would re-encode the picture and cost a little quality every time you fix a caption or a date.
Can I use RAW files?
No. The metadata tools read and write EXIF in JPEG files, and the GPS map reads JPEG and TIFF. RAW formats such as CR3, NEF, ARW and RAF are proprietary containers that browsers cannot decode, so they are not accepted. The usual workflow is to export JPEGs from your RAW developer and run those through these tools, which is also what you would be delivering or publishing anyway.
Is my location data sent anywhere?
The coordinates stay in the browser: EXIF is parsed locally and the CSV, GeoJSON and KML exports are generated in the tab. The map itself is drawn with MapLibre over raster tiles requested from the OpenStreetMap tile servers, so those servers see which map squares were requested, as they would for any web map. Your photos, their filenames and the exported coordinate list are never transmitted.
What size is the contact sheet I download?
It is a PNG rendered on a canvas at the page size you select, with the grid you choose — 3x3, 4x5, 5x6, 6x8, 8x10 or custom rows and columns — plus space for a header, footer and a caption strip under each frame. Because it is raster output at page resolution, print it at that size rather than enlarging it, and pick a denser grid rather than scaling up if you need more frames on one sheet.
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