It's not only that the results 'aren't great' [to put it mildly]. It's that they're full of exactly the kind of 'SEO spam' results that your USP claims your site avoids.

In fact, running the same searches in a 'normal' search engine actually produces better results which are free from SEO spam.

GOOGLE [via Startpage]

SEARCH: odt viewer

RESULTS:

Open Document Format (odt, odp, ods) Viewer

View ODT Online | Free GroupDocs Apps

ODT Viewer

ODT File Viewer - LibreOffice – Apps on Google Play

LibreOffice & OpenOffice document reader | ODF – Apps on Google ...

Online ODT Viewer - Conholdate Apps

ODT Viewer – Free Tool to Open & Read ODT File Extension

Free Online ODT Reader/Viewer - Aspose Products

BING [via DDG]

ODT Viewer

View ODT Online | Free GroupDocs Apps

ODT Viewer - Free Tool to Open & Read ODT File Extension

ODT File Viewer - LibreOffice - Apps on Google Play

ODT Viewer - Free download and software reviews - CNET

ODT Viewer (free) download Windows version

What Is an ODT File (And How to Open One) - Lifewire

Overview of the Office Deployment Tool - Deploy Office

Open Office Viewer - ODF, PDF - Apps on Google Play

GOOGLE [via Startpage]

SEARCH: webp image converter

RESULTS:

WEBP Converter - CloudConvert

WebP to JPG image converter - Ezgif

Convert images to WebP - Image Online Convert

WEBP to JPG - online-convert.com

An image format for the Web | WebP - Google Developers

WebP Converter - FreeConvert.com

WebP image converter - TinyIMG

JPG to WEBP (Online & Free) - Convertio

WebP Converter

Best Image to WEBP Converter Online - Image to JPG - 11zon

WebP / Avif image converter

Convert WEBP to JPG online for free - iLoveIMG

BING [via DDG]

WEBP Converter | CloudConvert

Jpg to Webp

WEBP to JPG (Online & Free) — Convertio

Webp Converter | Online Free Image Converting Tool

WEBP to JPG Converter - 100% Free

Image to WEBP - Online Converter

webp to image converter online - Free webp converter

WebP Converter

WebP image converter | TinyIMG

WebP Converter - FreeConvert.com

7 Best WebP Converters to Convert WebP to JPEG, or Vice Versa - WidsMob

Now, Im not for a minute suggesting that all those results are kosher. We all know how many junk websites are out there. But at least Google and Bing returned results that were relevant to what I searched for each time. So I could at least 'sort the wheat from the chaff' [and block those domains for the future with GHHBD[0]]. But your search engine didn't return ANY relevant results at all. And, more to the point actually returned a majority of obviously spammy marketing sites --which is precisely the thing you say your site is designed to avoid.

Sorry for pissing on your fireworks here. But either your algorithm is fucked and returning the opposite of what it's meant to find. Or, as is often the case, you've rushed into announcing your 'new thing' on HN, before it's anywhere near ready for primetime. Which is a counter-productive strategy as, even if your site improves in leaps and bounds from now on, I [and I presume others who've tested it at this stage] will already have filed it away under "Does not work" and are unlikely to consider it in future.

[0] https://www.jeffersonscher.com/gm/google-hit-hider/