# PDF Document Processing returns Bad Request **URL:** \ **Category:** Gemini API\ **Tags:** gemini-15, api, models\ **Created:** [September 23, 2024, 8:24am UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149 "2024-09-23T08:24:14Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Dragos\_Ivanov](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/dragos_ivanov/32/24594_2.png) [@Dragos\_Ivanov](https://discuss.ai.google.dev/u/Dragos_Ivanov)\ **Post date:** [September 23, 2024, 8:24am UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/1 "2024-09-23T08:24:14Z")
Hi, I’m working on a Node JS Api, and I m trying to use The Gemini API to process a pdf file. No matter what I do I always get ` "error": "[GoogleGenerativeAI Error]: Error fetching from https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent: [400 Bad Request] Request contains an invalid argument."` For example, I added some logs as you will see in the code below and I see to get the correct values: Input body: ```auto { "pdfUrl": "https://www.mv.org/cms/lib/PA02218547/Centricity/Domain/107/Module%2011.pdf" } ``` Downloaded and saved PDF as: /var/folders/f2/7yxklcss0yb5bzxmpw31yz\_m0000gn/T/tmp-25771-g9NDJZO1p6uS-.pdf, MIME type: application/pdf File uploaded to: [https://generativelanguage.googleapis.com/v1beta/files/gasz4rkn0u3j](https://generativelanguage.googleapis.com/v1beta/files/gasz4rkn0u3j) application/pdf API seems to be straight forward, and I used this [docs](https://ai.google.dev/gemini-api/docs/document-processing?lang=node): Below is my API code: ```auto const { GoogleAIFileManager } = require('@google/generative-ai/server'); const { GoogleGenerativeAI } = require("@google/generative-ai"); const express = require("express"); const axios = require("axios"); const fs = require("fs"); const path = require("path"); require("dotenv").config(); const tmp = require('tmp'); const mime = require('mime-types'); const app = express(); app.use(express.json()); // const API_KEY = process.env.GEMINI_API_KEY; // const fileManager = new GoogleAIFileManager(API_KEY); // const genAI = new GoogleGenerativeAI(API_KEY); app.post("/process-pdf", async (req, res) => { const { pdfUrl } = req.body; if (!pdfUrl) { return res.status(400).json({ error: "PDF URL is required" }); } try { // Step 1: Download PDF from URL and detect MIME type from response headers const response = await axios.get(pdfUrl, { responseType: 'arraybuffer' }); const buffer = Buffer.from(response.data, 'binary'); const mimeType = response.headers['content-type']; // Step 2: Create a temporary file for the downloaded PDF const tmpFile = tmp.fileSync({ postfix: `.${mime.extension(mimeType)}` }); fs.writeFileSync(tmpFile.name, buffer); console.log(`Downloaded and saved PDF as: ${tmpFile.name}, MIME type: ${mimeType}`); const API_KEY = process.env.GEMINI_API_KEY; const fileManager = new GoogleAIFileManager(API_KEY); const genAI = new GoogleGenerativeAI(API_KEY); // Step 3: Upload the temporary PDF file to Gemini and get the file URI const uploadResult = await fileManager.uploadFile(tmpFile.name, { mimeType: mimeType, displayName: `Uploaded PDF from URL`, }); const fileUri = uploadResult.file.uri; const updatedMimeType = uploadResult.file.mimeType; console.log(`File uploaded to: ${fileUri} ${updatedMimeType}`); const model = genAI.getGenerativeModel({ model: "gemini-1.5-flash" }); // Ensure the request structure aligns with the API requirements const result = await model.generateContent([ { fileData: { mimeType: updatedMimeType, fileUri: fileUri, }, }, { text: "Can you summarize this document as a bulleted list?" }, ]); tmpFile.removeCallback(); return res.status(200).json({ "data": result.response.text()}); } catch (error) { console.error("Error processing PDF:", error); return res.status(500).json({ error: error.message }); } }); // Start server const PORT = process.env.PORT || 3000; app.listen(PORT, () => { console.log(`Server is running on port ${PORT}`); }); ``` Any ideas please If I m doing something wrong? ---
**Author:** ![afirstenberg](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/afirstenberg/32/202_2.png) [@afirstenberg](https://discuss.ai.google.dev/u/afirstenberg)\ **Post date:** [September 23, 2024, 1:02pm UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/2 "2024-09-23T13:02:00Z")
Welcome to the forums! I haven’t tested the code, but on the surface it looks correct. I’m wondering if the issue is related to uploading the file. Some thoughts there: - Have you looked at `uploadResult` to see if any of the fields are out of the ordinary or if an error has been indicated? - I’ve personally had issues setting the `displayName`, although it is listed as a valid field, and others seem to be able to do it without issue. - Have you verified the `uploadResult.file.state` to make sure it is “AVAILABLE”? What I’m wondering is if there is an issue with the upload, and this is causing an issue with the file when Gemini tries to use it. ---
**Author:** ![Dragos\_Ivanov](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/dragos_ivanov/32/24594_2.png) [@Dragos\_Ivanov](https://discuss.ai.google.dev/u/Dragos_Ivanov)\ **Post date:** [September 23, 2024, 1:34pm UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/4 "2024-09-23T13:34:40Z")
It seems that the doc was bigger than 50 mb and that s why it was not working. According to the docs: You can use the File API to upload a document of any size. Always use the File API when the total request size (including the files, text prompt, system instructions, etc.) is larger than 20 MB. **Note:** The File API lets you store up to 20 GB of files per project, with a per-file maximum size of 2 GB. Files are stored for 48 hours. They can be accessed in that period with your API key, but cannot be downloaded from the API. The File API is available at no cost in all regions where the Gemini API is available. Unless the File API refers to some other API than GoogleAIFileManager, I don’t understand the docs. ---
**Author:** ![afirstenberg](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/afirstenberg/32/202_2.png) [@afirstenberg](https://discuss.ai.google.dev/u/afirstenberg)\ **Post date:** [September 23, 2024, 5:08pm UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/5 "2024-09-23T17:08:33Z")
There was a comment somewhere on the forum by @Logan_Kilpatrick that the PDF limit is 300 pages, apparently regardless of file size. Still an odd error. ---
**Author:** ![Dragos\_Ivanov](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/dragos_ivanov/32/24594_2.png) [@Dragos\_Ivanov](https://discuss.ai.google.dev/u/Dragos_Ivanov)\ **Post date:** [September 24, 2024, 10:01am UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/6 "2024-09-24T10:01:06Z")
My doc is 90 pages so I don’t think the issue. Is there a place to reach Google devs who support the Gemini API/Docs? Maybe there is a bug. ---
**Author:** ![afirstenberg](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/afirstenberg/32/202_2.png) [@afirstenberg](https://discuss.ai.google.dev/u/afirstenberg)\ **Post date:** [September 24, 2024, 12:21pm UTC](https://discuss.ai.google.dev/t/pdf-document-processing-returns-bad-request/40149/8 "2024-09-24T12:21:06Z")
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