Brandwave

How popular isChatPDF?

In September 2026, people searched for ChatPDF by name about 246,000 times worldwide, a 70.1% decrease from the previous year. These searches made up 0.87% of all global AI PDF tool searches, placing ChatPDF third out of seven tools. When we asked both ChatGPT and Google AI Overviews about AI PDF tools, ChatPDF appeared in all answers and was the third most recommended of the seven.

Search and AI answers in September 2026

ChatPDF is the third most searched of 7 competitors and the third most recommended in AI answers.

  1. NotebookLMShare of searches 86.2%Mentioned in 3 of 5 AI answersPlace in AI recommendations 2nd
  2. Adobe AcrobatShare of searches 12.8%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  3. ChatPDFShare of searches 0.87%Mentioned in 5 of 5 AI answersPlace in AI recommendations 3rd
  4. HumataShare of searches 0.05%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  5. PDF.aiShare of searches 0.05%Mentioned in 0 of 5 AI answersPlace in AI recommendations –

+2 more

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Top AI PDF tools in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, ChatPDF appeared in all five answers. ChatPDF is the third most recommended of the seven.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Adobe Acrobat1st
  2. NotebookLM2nd
  3. ChatPDF3rd
  4. Humata–
  5. PDF.ai–
  6. AskYourPDF–
  7. Documind–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Adobe Acrobat5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • ChatPDF5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • NotebookLM3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Humata0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • PDF.ai0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • AskYourPDF0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Documind0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about AI PDF tools

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Which AI PDF tools compete with ChatPDF?

ChatPDF against AI PDF tools worldwide, by month

Share of searches by month for NotebookLM, Adobe Acrobat, ChatPDF. The figures are in the table below the chart.

View monthly share of searches table
MonthNotebookLMAdobe AcrobatChatPDFHumataPDF.aiAskYourPDFDocumind
Oct 202567.1%27.6%4.7%0.23%0.28%0.08%<0.01%
Nov 202573.4%21.7%4.4%0.18%0.21%0.08%<0.01%
Dec 202579.8%17.7%2.2%0.11%0.16%0.05%<0.01%
Jan 202681.1%17.2%1.5%0.07%0.11%0.04%<0.01%
Feb 202679.6%18.7%1.5%0.09%0.11%0.03%<0.01%
Mar 202683.8%14.4%1.5%0.08%0.11%0.03%<0.01%
Apr 202687%11.2%1.6%0.08%0.1%0.03%<0.01%
May 202686.9%11.6%1.3%0.05%0.08%0.02%<0.01%
Jun 202685.3%13.5%1%0.05%0.08%0.02%<0.01%
Jul 202682.7%16.3%0.86%0.04%0.08%0.02%<0.01%
Aug 202685.1%13.9%0.86%0.05%0.06%0.01%<0.01%
Sep 202686.2%12.8%0.87%0.05%0.05%0.01%<0.01%

  1. 1.NotebookLM

    86.2%

    Held 1st. 24.5M estimated branded searches, +22.8% vs prior month. Share +1.1 points.

  2. 2.Adobe Acrobat

    12.8%

    Held 2nd. 3.6M estimated branded searches, +11.6% vs prior month. Share -1.1 points.

  3. 3.ChatPDF

    0.87%

    Held 3rd. 246K estimated branded searches, +22.4% vs prior month. Share 0 points.

  4. 4.Humata

    0.05%

    Moved from 5th to 4th. 14.8K estimated branded searches, +22.3% vs prior month. Share 0 points.

  5. 5.PDF.ai

    0.05%

    Moved from 4th to 5th. 14.8K estimated branded searches, 0% vs prior month. Share 0 points.

  6. 6.AskYourPDF

    0.01%

    Held 6th. 2.9K estimated branded searches, +20.8% vs prior month. Share 0 points.

  7. 7.Documind

    <0.01%

    Held 7th. 720 estimated branded searches, 0% vs prior month. Share 0 points.

Compare popularity between ChatPDF and its closest rivals

Every comparison with ChatPDF

6 comparisons

How has branded search demand for ChatPDF changed worldwide over the last 12 months?

3 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for ChatPDF worldwide fell from 823K to 246K.
  • Across the 12 months ending September 2026, ChatPDF’s share of searches among AI PDF tools worldwide decreased from 4.7% to 0.87%.
  • Across the 12 months ending September 2026, ChatPDF’s share of searches among AI PDF tools worldwide peaked at 4.7% in October 2025 and was lowest at 0.86% in August 2026.

How did search popularity change for AI PDF tools worldwide in September 2026?

6 changes

  1. In September 2026, NotebookLM gained share of searches among AI PDF tools worldwide, from 85.1% to 86.2%.

  2. In September 2026, Adobe Acrobat lost share of searches among AI PDF tools worldwide, from 13.9% to 12.8%.

  3. In September 2026, Humata rose from 5th to 4th among AI PDF tools worldwide.

  4. In September 2026, PDF.ai fell from 4th to 5th among AI PDF tools worldwide.

  5. Estimated monthly branded searches for AskYourPDF worldwide fell 80.4% over 12 measured months, from 14.8K to 2.9K in September 2026.

  6. Estimated monthly branded searches for ChatPDF worldwide fell 70.1% over 12 measured months, from 823K to 246K in September 2026.

How are ChatPDF’s branded searches counted?

1 search term

Brandwave collects information about searches that people make online using ChatPDF’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • chatpdf

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How the Brand Demand Index is measured

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