
SEMRush
Moz
Profound
SE Ranking
Serpstat
Otterly.AI
Surfer SEO
Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!

PDFShift
DocRaptor
pdflayer
HTMLEmail.io
PDFCrowd
Templates by Email Monster
PDF my URL
Developer-first file conversion and website capture API: 300+ format pairs across documents, images, audio, and video, plus pixel-perfect HTML-to-PDF rendering. Plain REST, no SDK required. 100 free conversions a month, files up to 1 GB.
Which is more popular?
Based on our record, Ahrefs seems to be more popular. It has been mentioned 123 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | ahrefs.com | converterer.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Singapore | Startup from Australia · 1 - 9 employees · 2018 |
| Listed in |
In their own words, as submitted to SaaSHub.


Ahrefs is trusted by SEOs and marketing professionals worldwide as the ultimate toolset for SEO, powered by industry-leading data. Ahrefs crawls the web, stores tons of data and makes it easily accessible via a simple user interface. The data can be used to aid keyword research, link building,...
Converterer (formerly Paperplane) is a REST API for file conversion and website capture, built for developers and no-code workflows. File conversion: convert documents, spreadsheets, presentations, images, audio, and video across 300+ format pairs: DOCX to PDF, PDF to DOCX, XLSX to CSV, PNG to...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Ahrefs yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Ahrefs Review and Tutorial: Is This The Only SEO Tool You Need?
More videos
Video Review Paperplane New Era 9FIFTY Snapback Cap
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Ahrefs and Converterer.
Converterer's answer:
Two APIs under one plan and one allowance: file conversion across 300+ format pairs (documents, spreadsheets, presentations, images, audio, video) and website capture that renders any URL as a print-ready PDF with a real headless Chromium engine. Pricing is flat per conversion, so a 900 MB video costs the same as a 40 KB document, where most competitors bill credits or processing minutes that scale with file size. And there is no SDK to install: it is plain REST you can drive from cURL.
Converterer's answer:
Predictable cost and less integration work. Flat per-conversion pricing with files up to 1 GB on every plan means no surprise bills when documents get heavy. The free tier is a real recurring allowance, 100 conversions every month with no card, rather than a one-time trial. Integration is one POST request with HTTP Basic auth, HMAC-signed webhooks instead of polling, and delivery straight into your own storage bucket if you want it. The capture engine has been rendering PDFs in production since 2018, and we publish sourced, dated comparisons against competitors on our own site, including the cases where they are the better fit.
Converterer's answer:
Developers adding file conversion or document rendering to their products (invoices, reports, archives, media processing), and operations or no-code builders automating the same jobs through Zapier, Make, n8n, Power Automate, or Workato. Typical users are SaaS teams generating documents at scale and teams replacing self-hosted conversion stacks they no longer want to operate.
Converterer's answer:
Converterer started in 2018 as Paperplane, a focused HTML-to-PDF API built on headless Chrome. Customers kept asking for conversions that had nothing to do with HTML: DOCX to PDF, HEIC to JPG, MP4 to GIF. So the platform grew past its name, and in May 2026 it relaunched as Converterer: the same team and rendering engine, expanded to a full file conversion API with 300+ format pairs alongside the original website capture.
Converterer's answer:
Website capture runs on a real headless Chromium engine, so output matches what desktop Chrome renders, including web fonts, Flexbox, Grid, and JavaScript-heavy pages. The API itself is plain REST over HTTPS with HTTP Basic authentication and HMAC-signed webhooks, and output delivery integrates with standard object storage (S3-compatible, Google Cloud Storage, Azure).
Share your experience with using Ahrefs and Converterer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


You already pay for Ahrefs or Semrush: try their AI module first; neither offers a trial on it.
I've really enjoyed using Ahrefs to inform my content creation, particularly because the Keyword Explorer is so useful for identifying low-difficulty keywords.
For full management : Semrush or Ahrefs cover research, auditing, and tracking in one place, making them ideal for agencies managing multiple clients. See our guide to the best SEO tools for agencies.
We have no reviews of Converterer yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Marketing-led growth (MLG) involves extensive marketing initiatives to drive customer acquisition, retention, and expansion. Brands such as HubSpot and Ahrefs have found success with MLG by leveraging large content libraries to generate... - Source: dev.to / 7 months ago
Ahrefs provides industry-leading backlink analysis alongside powerful content research capabilities that help WordPress sites build authority. Site Explorer reveals your complete backlink profile while identifying link-building... - Source: dev.to / 10 months ago
Domain Rating is a proprietary metric developed by Ahrefs that measures the strength of your website's backlink profile. - Source: dev.to / about 1 year ago
Tracking Converterer since Mar 2021.
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Profound helps brands gain visibility in AI-generated answers, optimize their presence in LLM-based answer engines, and stay competitive in the zero-click world.
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Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
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