
Userback
Marker.io
Usersnap
BugHerd
Canny.io
Ruttl
Pastel
Markup.io
Converterer
PDFShift
DocRaptor
pdflayer
HTMLEmail.io
PDFCrowd
Templates by Email Monster
Api2Pdf
Userback is a powerful visual feedback and bug-tracking platform tailored for SaaS teams looking to enhance their product development process. With Userback, you can easily capture and manage user feedback through annotated screenshots, session replays, and customizable surveys. This ensures that every piece of feedback is actionable, helping you identify and resolve issues quickly.
Designed to integrate seamlessly with popular project management tools like Jira, Trello, Asana, and Slack, Userback streamlines communication and ensures that feedback is delivered directly to your teamโs workflow. Whether you're building new features or refining existing ones, Userback provides the insights needed to create products that resonate with your users.
Userback's intuitive interface and powerful automation features make it easy to prioritize and act on feedback, enabling teams of all sizes to build better products faster. Whether you're a product manager, designer, or developer, Userback helps you stay connected with your users, delivering the data you need to improve user satisfaction and drive product success.
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 WebP, HEIC to JPG, MP4 to GIF, WAV to MP3, and hundreds more. Upload a file or pass a URL, and the converted file is delivered to built-in storage or your own bucket.
Website capture: render any URL as a pixel-perfect, print-ready PDF with a real headless Chromium engine, the same rendering path that has powered Paperplane since 2018. Page size, margins, headers and footers with page numbers, HTTP auth, and wait conditions for JavaScript-heavy pages are all parameters on a single call.
Built for developers: plain REST with curl-friendly endpoints, no SDK needed, just POST it. Code recipes for Python, Node.js, PHP, Laravel, Ruby, Go, Java, and plain cURL. Async jobs with signed (HMAC) webhooks, metadata passthrough, custom file names, and a synchronous capture endpoint when you want the PDF back in one request.
No-code and automation: drop conversion and capture into Zapier, Make, n8n, Power Automate, or Workato flows.
Storage your way: results land in the built-in destination with zero setup, or connect your own bucket (S3-compatible, Google Cloud Storage, Azure, and more).
Pricing: 100 free conversions a month, no credit card required, files up to 1 GB on every plan. Paid plans from $9.99/month including 2,500 conversions.
Formerly Paperplane (est. 2018): same team and infrastructure, expanded from HTML-to-PDF to full file conversion.
Userback
ConvertererUserback's answer
Userback stands out due to its emphasis on visual feedback and seamless integration into existing workflows. Unlike traditional feedback tools, Userback allows users to capture annotated screenshots, session replays, and detailed user insights directly from your website or application. This level of visual detail makes it easier for teams to understand and address issues quickly. Additionally, Userback's integrations with popular project management tools like Jira, Trello, Asana, and Slack ensure that feedback is instantly actionable, keeping your development process efficient and user-focused.
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.
Userback's answer
Userback offers a unique combination of visual feedback tools, customizable user surveys, intuitive user experience, and powerful integrations that set it apart from competitors. The platform's ability to capture detailed, visual feedback directly from users reduces the back-and-forth often associated with bug tracking and issue resolution. Moreover, Userback's customizable feedback forms and automated workflows make it easy to tailor the platform to your specific needs, whether you're a small team or a large organization. By choosing Userback, you ensure that your development process is driven by clear, actionable insights that lead to better products and happier users.
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.
Userback's answer
Userbackโs primary audience includes product managers, UX/UI designers, software developers, and customer support teams in SaaS companies and digital agencies. These professionals rely on Userback to streamline the feedback collection process, improve communication between teams, and deliver products that align with user expectations. Whether working on a new feature or refining an existing product, Userback helps these teams stay connected with their users and make data-driven decisions that enhance the overall user experience.
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.
Userback's answer
Userback was born out of a desire to bridge the gap between users and product teams by making feedback collection more efficient and actionable. The founders recognized that traditional feedback tools often lacked the ability to convey the visual context needed to truly understand user issues. To solve this, they created a platform that combines visual feedback with powerful integrations, allowing teams to capture, manage, and act on feedback in real-time. Since its inception, Userback has grown into a trusted tool for thousands of teams worldwide, helping them build products that users love.
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).
Based on our record, Userback seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Userback is a game changer! It lets me collect feedback from my users in a snap and share it with my dev team so we can fix things faster. It's saved so many headaches from figuring out where to get started by having everything in one location. Check it out here: https://userback.io/. Source: over 3 years ago
Userback is a good tool for design review & feedback. Source: almost 4 years ago
The userback.io link appears to relate to the site's hovering "feedback" button on the side, which may be regarded by some as an annoyance, though I'd only block it if it doesn't otherwise remove the feedback function on the site. The other three unblocked URLs are all neccessary for the page to load properly along with many other sites on the internet. Source: about 4 years ago
Marker.io - Visual feedback and bug reporting tool for websites
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
BugHerd - BugHerd: The Website Feedback Tool for Agencies
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.