TMDSAS Photo Requirements: What the Application Actually Specifies

Written By Ryan Dunbar

TMDSAS requires a photo. The published requirement for it is quoted below in full.

The published requirement

"You are required to upload a digital, professional photo of yourself. It must be smaller than 100KB and be in one of the following file formats: jpg, gif, png or bmp."

Maximum file size100KB
Accepted formatsjpg · gif · png · bmp
Pixel dimensions specifiedNone
Changeable after submittingNo

Published source. TMDSAS Application Guide, Personal Information section, Entry Year 2027. Checked 4 September 2026.

A file under 100KB, in one of 4 formats, described as professional. That is the entire published specification.

What the requirement does not include

None of the following appears on the Personal Information page, and none appears elsewhere in the Entry Year 2027 Application Guide.

Not stated anywhere in the requirement
  • Pixel dimensions
  • Aspect ratio
  • Background color
  • Dress code
  • Expression
  • Recency window
  • Color or black and white
  • Rejection criteria

TMDSAS has published advice separately from the requirement. An article under the TMDSAS name tells applicants to avoid beach attire, activewear and revealing clothing. It suggests wearing what you would be proud to wear to a job interview, and keeping the background clear of anything distracting. That advice comes from the organization and it is worth following. It also sits outside the stated requirement, and nothing in it is checked by the upload.

The distinction matters. Most of what gets repeated about this photo is advice, not requirement.

The upload happens once

The Personal Information page states it flatly: "You cannot change your photo after submitting your application."

The Approved Changes table on the Next Steps After Submitting page qualifies that. Against the photo row it records that a change is permitted "only by request of TMDSAS" and "when current photo is missing or does not meet requirements."

Read together, the applicant holds no option to replace the photo. TMDSAS holds an option to ask for a replacement when the file is missing or fails the requirement. At least one widely used third-party application guide lists the photo among the things an applicant can update after submitting. That reverses who holds the option.

The same sentence carries a gap. A photo can apparently fail to meet requirements, and the only published requirements it can be measured against are file size and file format.

Where the other numbers come from

Searching for medical application photo specifications turns up the same set of numbers repeatedly: 2.5 by 3.5 inches, 150 DPI, under 150KB. Those numbers are real and they are published by AAMC, for ERAS, the residency application that comes at the end of medical school rather than before it. They have nothing to do with TMDSAS. TMDSAS publishes 100KB and no dimensions at all.

Both are centrally administered medical application photos, so the assumption that they share a spec is an easy one to make. They are separate systems, run by separate organizations, at opposite ends of medical training. Only one of them publishes dimensions. If you are applying to a Texas medical, dental or veterinary school this year, it is not the one you are dealing with. The strict version arrives later, with the ERAS application photo.

What DPI does, and what it does not do

DPI is an instruction for a printer. It is a number written into the file's metadata saying how large the image should be when ink meets paper. On its own it changes nothing about a file being uploaded to a web form.

That is straightforward to confirm. The same image was saved 4 times, changing only the DPI value written into the metadata.

DPI written to fileFile sizePixel dimensions
72272,321 bytes750 x 1050
150272,321 bytes750 x 1050
300272,321 bytes750 x 1050
1200272,321 bytes750 x 1050

One JPEG, saved at quality 80, with 4 different DPI metadata values. Test run 4 September 2026.

Identical bytes, identical pixels, 4 times over. Only the metadata field moved. Anyone telling a TMDSAS applicant to export at 300 DPI is asking for a change that does not touch the file being uploaded.

DPI does become meaningful when it is multiplied by a measurement in inches, which is what the ERAS specification is doing. 2.5 inches at 150 DPI is 375 pixels. 3.5 inches at 150 DPI is 525 pixels. Stated plainly, that spec asks for an image 375 by 525 pixels. The DPI figure is half of the arithmetic, not a setting to apply on its own.

TMDSAS gives no inches and no pixel count, so none of that arithmetic applies to a TMDSAS photo. What decides whether the file clears 100KB is its pixel dimensions and its compression quality.

Working down to 100KB

100KB is small. A photo off a recent phone commonly runs to several megabytes. It will not upload as it comes off the camera.

Pixel dimensions and compression quality both bring it down, and they fail differently. Reducing pixel dimensions shrinks the file roughly in proportion to area. Halve the width and the height and the pixel count drops to 25 percent. The picture gets smaller on screen. What is left of it stays clean. Lowering JPEG quality holds the dimensions and discards detail instead. Push it far enough and edges break up into blocking and haloing. Faces show it first, around the eyes, the hairline, the collar.

  1. Crop tight to the head and shoulders. This removes pixels and removes background detail in the same move, and detailed backgrounds are the expensive part of a JPEG. A plain wall costs almost nothing.
  2. Reduce the pixel dimensions. Area drives file size, so this is the lever that costs the least visible quality.
  3. Lower the JPEG quality last, and only as far as you have to.
  4. Read the size off the file itself. An export preset labelled "web" or "small" guarantees nothing in particular.

What could not be verified

Several things a careful applicant would reasonably want to know have no primary source that could be located.

  • What causes a photo to fail the requirement beyond file size and format. The word "professional" is not defined anywhere in the guide, and no rejection criteria are published.
  • Whether admissions committees at the participating schools view the photo, and at what point.
  • How often TMDSAS asks an applicant for a replacement.
  • Whether the separately published dress and background advice carries any weight during review.

Anyone stating those with confidence is not working from a published TMDSAS document. Photo requirements attributed to other application services were not checked against their own primary sources here, and should not be assumed from anything above.

Sources

Application requirements change between cycles. Everything above reflects the Entry Year 2027 Application Guide as published on the dates checked. Confirm against TMDSAS before you upload.

Ryan Dunbar
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