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[GH-ISSUE #4585] [bug]: OpenAPI import fails with error "format not recognized" #1691

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opened 2026-03-16 21:26:03 +03:00 by kerem · 6 comments

kerem commented

2026-03-16 21:26:03 +03:00

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Originally created by @schanjan on GitHub (Dec 3, 2024).
Original GitHub issue: https://github.com/hoppscotch/hoppscotch/issues/4585

Is there an existing issue for this?

I have searched the existing issues

Current behavior

When I try to import an OpenAPI specification JSON, I get the following error:

The file is about 2MB in size. The import of the same works fine on Postman:

I don't have any details on why it is failing on Hoppscotch as the only thing I have is the error message above. No logs in the console as well.
OpenAPI version: 3.0.2

Steps to reproduce

Import the OpenAPI JSON file via file upload as proposed in the wizard.

I am not able to share the OpenAPI publicly here, but would definitely offer it for recreation purpose. Please contact me in that case.

Environment

Production

Version

Cloud

Originally created by @schanjan on GitHub (Dec 3, 2024). Original GitHub issue: https://github.com/hoppscotch/hoppscotch/issues/4585 ### Is there an existing issue for this? - [X] I have searched the existing issues ### Current behavior When I try to import an OpenAPI specification JSON, I get the following error: ![image](https://github.com/user-attachments/assets/21eebbbe-d66c-40e0-8795-ba6b90464ecf) The file is about 2MB in size. The import of the same works fine on Postman: ![image](https://github.com/user-attachments/assets/613d208e-cd3b-44e0-b145-1b826e7af56b) I don't have any details on why it is failing on Hoppscotch as the only thing I have is the error message above. No logs in the console as well. OpenAPI version: 3.0.2 ### Steps to reproduce Import the OpenAPI JSON file via file upload as proposed in the wizard. I am not able to share the OpenAPI publicly here, but would definitely offer it for recreation purpose. Please contact me in that case. ### Environment Production ### Version Cloud

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2026-03-16 21:26:03 +03:00

kerem commented

2026-03-16 21:26:29 +03:00

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@amk-dev commented on GitHub (Dec 3, 2024):

@schanjan do you have a sample spec that can reproduce this issue ?

@amk-dev commented on GitHub (Dec 3, 2024): @schanjan do you have a sample spec that can reproduce this issue ?

kerem commented

2026-03-16 21:26:34 +03:00

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@schanjan commented on GitHub (Dec 3, 2024):

Please find the somewhat anonymized OpenAPI attached.
metadata.openapi3.json

@schanjan commented on GitHub (Dec 3, 2024): Please find the somewhat anonymized OpenAPI attached. [metadata.openapi3.json](https://github.com/user-attachments/files/17991697/metadata.openapi3.json)

kerem commented

2026-03-16 21:26:39 +03:00

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@amk-dev commented on GitHub (Dec 4, 2024):

@schanjan thank you! looking in to this. will keep you posted

@amk-dev commented on GitHub (Dec 4, 2024): @schanjan thank you! looking in to this. will keep you posted

kerem commented

2026-03-16 21:26:44 +03:00

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@anwarulislam commented on GitHub (May 18, 2025):

Hi @schanjan,
I attempted to import the JSON, and it's working perfectly! Could you please confirm?

@anwarulislam commented on GitHub (May 18, 2025): Hi @schanjan, I attempted to import the JSON, and it's working perfectly! Could you please confirm?

kerem commented

2026-03-16 21:26:49 +03:00

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@schanjan commented on GitHub (May 20, 2025):

Hi @anwarulislam
I was able to import the json successfully in a private window / new hoppscotch account.
However, in my existing account, I still receive the above mentioned error.
Not sure you want to follow this, I am working with individually copying the requests I need. It is not of such high priority.

@schanjan commented on GitHub (May 20, 2025): Hi @anwarulislam I was able to import the json successfully in a private window / new hoppscotch account. However, in my existing account, I still receive the above mentioned error. Not sure you want to follow this, I am working with individually copying the requests I need. It is not of such high priority.

kerem commented

2026-03-16 21:26:54 +03:00

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@MSP-Stev commented on GitHub (Jun 20, 2025):

For self-hosted user

I had the same issue with AIO installation + reverse proxy (nginx)

Console showed:

backend/graphql net::ERR_FAILED 413 (Request Entity Too Large)" ERR_FAILED 413 (Request Entity Too Large)

Fix:
Increase client max body size and reload/restart nginx

client_max_body_size 10M;

@MSP-Stev commented on GitHub (Jun 20, 2025): **For self-hosted user** I had the same issue with AIO installation + reverse proxy (nginx) Console showed: ``` backend/graphql net::ERR_FAILED 413 (Request Entity Too Large)" ERR_FAILED 413 (Request Entity Too Large) ``` Fix: Increase client max body size and reload/restart nginx ``` client_max_body_size 10M; ```

kerem referenced this issue

2026-03-17 01:03:59 +03:00

[PR #1703] [MERGED] fix: prevent overwrite of content type #3453