Shopify CDN not returning correct image type

sengming · January 20, 2026, 6:55pm

Short description of issue

The Shopify CDN is returning Content-Type: image/svg+xml even though .jpg is specified

Reproduction steps

$ http HEAD 'https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg?v=1764822038

HTTP/1.1 200 OK
Content-Type: image/svg+xml

for reference this is what happens when the correct image type is returned

$ http HEAD ‘https://cdn.shopify.com/s/files/1/0761/0181/2540/files/2-function.svg.jpg?v=1764822038’

HTTP/1.1 200 OK
Content-Type: image/jpeg

Additional info

I’m not if this is the right category for this question. Feel free to let me know if I need to move it!

What type of topic is this

Bug report

sengming · January 20, 2026, 6:57pm

it case it wasn’t clear, format conversion is a feature of the Shopify CDN https://cdn.shopify.com/

jessec · January 21, 2026, 4:57pm

I have no experience with this at all, but you have me curious about this behavior, just from one developer to another. A couple thoughts:

That page says “Shopify automatically detects which file formats are supported on the client side and sends the best option” but that leaves a lot of open questions. (Detects how? What’s “best”?) If I use curl one your example image URLs I get image/svg+xml for both no matter what, it seems.
Any chance SVG is just too much for this system to handle as one of those automatically-converted image formats? Rendering as an actual raster image versus just delivering the XML as-is seems like it might be outside the scope of their image format conversion. But, I’m just guessing since they don’t give details!

Edit: Nevermind, with a corrected example URL I see the same behavior @sengming describes.

sengming · January 21, 2026, 5:01pm

if you curl https://cdn.shopify.com/s/files/1/0761/0181/2540/files/2-function.svg.jpg?v=1764822038 you’ll get Content-Type: image/jpeg ! That’s how I know it works sometimes.

jessec · January 21, 2026, 5:46pm

Wait, you’re right, I see the same thing! The formatting on your first link for the 2-function file includes an extra character in the URL at the end (...038’ with the curly quote in the URL) and with that included the Shopify CDN gives an SVG. If that’s excluded it does give a JPEG like you said. So it definitely is rendering SVG as a raster image… but just for your one file and not the other. Weird.

Paige-Shopify · January 22, 2026, 1:08am

Hi @sengming, thanks for reaching out.

To confirm I’m understanding correctly: for some .svg.jpg images, the Content-Type response header is image/svg+xml, while for others it’s image/jpeg?

When I curled the headers for both images I got image/jpeg:

Then when I opened the links in my Chrome browser, I got image/svg+xml:

sengming · January 22, 2026, 4:19pm

thanks @Paige-Shopify for trying it out. I am getting content-type: image/svg+xml even on curl!

This is what I’m getting

> curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=1764822038 
HTTP/2 200 
date: Thu, 22 Jan 2026 16:14:23 GMT
content-type: image/svg+xml
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600

it’s weird when I do it it’s still stuck at content-type: image/svg+xml. Is it possible to request a purge of this entry? I tried using different v values and still have the same problem.

> curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=67
HTTP/2 200 
date: Thu, 22 Jan 2026 16:18:08 GMT
content-type: image/svg+xml

Paige-Shopify · January 23, 2026, 12:19am

That is strange. Is it that specific image only or other images as well?
Are you using a specific interface to curl the image at all?

Paige-Shopify · January 23, 2026, 12:27am

In the response headers, you should see an x-request-id . Could you share one of those values with us so we can check our logs?

sengming · January 23, 2026, 3:22pm

this is the only time it’s happened to me (so far)

x-request-id: 3ebbd7ad-725a-4058-be1b-fa20f23573a7-1769181708

full headers here:


> curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=1764822039 
HTTP/2 200 
date: Fri, 23 Jan 2026 15:21:49 GMT
content-type: image/svg+xml
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600
content-security-policy: sandbox; report-to csp-reports
link: <https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg>; rel="canonical"
reporting-endpoints: csp-reports="https://security-reports.shopifysvc.com/reporting-api?source_app=cdn-shopify-shop-assets&policy_id=aab9a444-ea1a-4369-a32b-f5a658701a14"
server-timing: imagery;dur=437.095, imageryFetch;dur=216.467, imageryProcess;dur=0.303;desc="image"
source-length: 9063949
source-type: image/svg+xml
timing-allow-origin: *
vary: Accept-Encoding
x-content-type-options: nosniff
x-request-id: 3ebbd7ad-725a-4058-be1b-fa20f23573a7-1769181708
x-shopid: 76101812540
x-xss-protection: 1; mode=block
strict-transport-security: max-age=15552000; includeSubDomains; preload
x-dc: gcp-us-east1,gcp-us-central1
last-modified: Fri, 23 Jan 2026 15:21:49 GMT
cf-cache-status: MISS
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=cg7iv%2BXcCTJXajoyawFZVd27cZCnUDmcZOoyNTJfjMsPJZq1KQhx%2Fw5IxxSoh02qJ69wCyZeSz71qi0TxUgDh8uR6e2RQUtg6mZkNjfj5CCuV%2B1M%2B7q4u3iszVVIwebS2kXSGYOGcPW6LUCK8w%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
server-timing: cfRequestDuration;dur=631.000280
server-timing: ipv6
server: cloudflare
cf-ray: 9c28486e38cc7d02-EWR
alt-svc: h3=":443"; ma=86400

Paige-Shopify · January 27, 2026, 12:22am

Thanks for sharing those!

Interestingly, I was just able to replicate the issue with v=1764822039.

https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg?v=1764822038 = image/jpeg
https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg?v=1764822039 = image/svg+xml

I’m unsure how that would happen so we’re looking into this on our end and will share an update as soon as we have more information.

Paige-Shopify · January 27, 2026, 9:41pm

@sengming, we investigated this further and discovered a small issue with .svg to .jpg conversion. A fix for this has now been deployed. Thanks for reporting this issue to us, and please do let us know if you encounter any further issues

sengming · January 28, 2026, 6:07pm

thanks for all the help @Paige-Shopify !

However, I’m still seeing the same problem (x-request-id: 8dfa4f5c-e507-4f18-b118-52580435748d-1769444494):

Should I wait another day?

❯ curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=1764822039 
HTTP/2 200 
date: Wed, 28 Jan 2026 18:06:12 GMT
content-type: image/svg+xml
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600
content-security-policy: sandbox; report-to csp-reports
link: <https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg>; rel="canonical"
reporting-endpoints: csp-reports="https://security-reports.shopifysvc.com/reporting-api?source_app=cdn-shopify-shop-assets&policy_id=aab9a444-ea1a-4369-a32b-f5a658701a14"
server-timing: imagery;dur=493.733, imageryFetch;dur=231.119, imageryProcess;dur=1.073;desc="image"
source-length: 9063949
source-type: image/svg+xml
timing-allow-origin: *
vary: Accept-Encoding
x-content-type-options: nosniff
x-request-id: 8dfa4f5c-e507-4f18-b118-52580435748d-1769444494
x-shopid: 76101812540
x-xss-protection: 1; mode=block
strict-transport-security: max-age=15552000; includeSubDomains; preload
x-dc: gcp-us-east1,gcp-us-east1
last-modified: Mon, 26 Jan 2026 16:21:34 GMT
cf-cache-status: HIT
age: 179078
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=051YGwo%2BEnM%2B8jRzugg13In6i4Ml9mXPIJ0ZCxX5rBqf7r%2Bl0pgbVQWE6Jnyo7P0Osvk7Ojw%2BXk%2FQIyRZ9h5nWeGLyXgqTvApgAHm01BW2oovu02X8LM%2Fq49YPsNgB6uFGR6JIAGGT8dUOR%2FuA%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
server-timing: cfRequestDuration;dur=25.999784
server-timing: ipv6
server: cloudflare
cf-ray: 9c526c218e437283-EWR
alt-svc: h3=":443"; ma=86400

Paige-Shopify · January 28, 2026, 9:39pm

Yes, I recommend waiting another day or so.
I see on that particular request, the server’s cache was used:
cf-cache-status: HIT

sengming · January 29, 2026, 8:47pm

I’m still seeing the same issue

❯ curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=1764822039 
HTTP/2 200 
date: Thu, 29 Jan 2026 20:46:25 GMT
content-type: image/svg+xml
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600
content-security-policy: sandbox; report-to csp-reports
link: <https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg>; rel="canonical"
reporting-endpoints: csp-reports="https://security-reports.shopifysvc.com/reporting-api?source_app=cdn-shopify-shop-assets&policy_id=aab9a444-ea1a-4369-a32b-f5a658701a14"
server-timing: imagery;dur=493.733, imageryFetch;dur=231.119, imageryProcess;dur=1.073;desc="image"
source-length: 9063949
source-type: image/svg+xml
timing-allow-origin: *
vary: Accept-Encoding
x-content-type-options: nosniff
x-request-id: 8dfa4f5c-e507-4f18-b118-52580435748d-1769444494
x-shopid: 76101812540
x-xss-protection: 1; mode=block
strict-transport-security: max-age=15552000; includeSubDomains; preload
x-dc: gcp-us-east1,gcp-us-east1
last-modified: Mon, 26 Jan 2026 16:21:34 GMT
cf-cache-status: HIT
age: 275091
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=TVjwE77X3kWfquZvCvotezD%2Fbt0YDe9%2F3YiBzGb3gsXT37urY7ATU4U%2FN9eXKG9JxYaORKKOXhlJWBSfox3L1wYpk9lNs7ZSvHlTf3F05haMgXsz5LfpqqqdML73EpwtWL%2FlFhUBLcmUALBpWg%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
server-timing: cfRequestDuration;dur=13.000011
server-timing: ipv6
server: cloudflare
cf-ray: 9c5b94308a77b886-EWR
alt-svc: h3=":443"; ma=86400

Paige-Shopify · January 30, 2026, 1:09am

Looks like it’s still hitting the cache. We might have to wait until that cache clears first to confirm.

sengming · February 3, 2026, 2:24pm

Hi @Paige-Shopify it’s been a week and I’m still getting the same error. Is there a way to clear the cache?

❯ curl -I https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg\?v\=1764822039 
HTTP/2 200 
date: Tue, 03 Feb 2026 14:23:06 GMT
content-type: image/jpeg
content-length: 92377
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600
content-security-policy: sandbox;
link: <https://cdn.shopify.com/s/files/1/0761/0181/2540/files/3-targetuser.svg.jpg>; rel="canonical"
server-timing: imagery;dur=1135.509, imageryFetch;dur=354.411, imageryProcess;dur=709.684;desc="image"
source-length: 9063949
source-type: image/svg+xml
timing-allow-origin: *
x-content-type-options: nosniff
x-request-id: 5d82b5bf-364c-48f4-a219-e8f91a8773f1-1770128585
x-shopid: 76101812540
x-xss-protection: 1; mode=block
strict-transport-security: max-age=15552000; includeSubDomains; preload
x-dc: gcp-us-east1,gcp-us-east1
last-modified: Tue, 03 Feb 2026 14:23:06 GMT
cf-cache-status: MISS
accept-ranges: bytes
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=YlFj1qnNG2M43xuSD22MGtPYfVfYsEDrwnUhA%2Frok5zI4%2F5E6x0MaRHJFztUviE8RrxyRR4JxmoPYIJigX1AD1PS4Fk8B%2B0UrY3mwJ2fTvTe9LB%2FgJElzHHsGb6nUI%2Bqc9Qt7f35qTKh0Rs0uw%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
server-timing: cfRequestDuration;dur=1229.000092
server-timing: ipv6
server: cloudflare
cf-ray: 9c82958c0d3dcdf0-EWR
alt-svc: h3=":443"; ma=86400

sengming · February 3, 2026, 7:51pm

I just noticed that it is starting to happening for .gif files too

 curl -I 'https://cdn.shopify.com/s/files/1/0641/5784/3670/files/SanrioPocketSmileAssets_1_b2912074-bb5a-4df8-bec5-bcf0e4fd6a61.gif.jpg?v=1765436143'
HTTP/2 200 
date: Tue, 03 Feb 2026 19:50:18 GMT
content-type: image/gif
content-length: 555813
access-control-allow-origin: *
access-control-expose-headers: *
cache-control: public, max-age=31557600
link: <https://cdn.shopify.com/s/files/1/0641/5784/3670/files/SanrioPocketSmileAssets_1_b2912074-bb5a-4df8-bec5-bcf0e4fd6a61.gif.jpg>; rel="canonical"
server-timing: imagery;dur=54.637, imageryFetch;dur=52.296, imageryProcess;dur=0.082;desc="image"
source-length: 555813
source-type: image/gif
timing-allow-origin: *
vary: Accept
x-content-type-options: nosniff
x-request-id: 03410477-2277-4aea-a17e-2f718030c222-1770090073
x-shopid: 64157843670
x-xss-protection: 1; mode=block
strict-transport-security: max-age=15552000; includeSubDomains; preload
x-dc: gcp-us-east1,gcp-us-central1
last-modified: Tue, 03 Feb 2026 03:41:13 GMT
cf-cache-status: HIT
age: 172
accept-ranges: bytes
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=UG%2BRM2WUsreuINHIJOVwSg01fnMHmzfh2ql65pqWM%2BY5Ti2NoQWH7nCv7wexdeV2knqULozMoiyHfDdRwtTCCE4bgTK1Uk4j5c7LrvjiTc2QkQpv5d1hpMlJe8FVJVNVNFq0AaOETrK08xuKKg%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
server-timing: cfRequestDuration;dur=38.999796
server-timing: ipv6
server: cloudflare
cf-ray: 9c8474df9fb1d923-EWR
alt-svc: h3=":443"; ma=86400

Paige-Shopify · February 4, 2026, 12:35am

@sengming, it looks like that request actually returned image/jpeg as expected now that it has cf-cache-status: MISS:

Do you have a request ID for a recent request where it didn’t?

Regarding the .gif files, I’ll look into that now. We might need a follow-up fix for this format as well. Let me know if you encounter issues with any other formats in the meantime

sengming · February 4, 2026, 7:46pm

yes you’re right about the svg files are now showing as jpeg thanks!!

thanks for looking into the GIF file too.

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Shopify CDN not returning correct image type

Short description of issue

Reproduction steps

Additional info

What type of topic is this

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