Online proofing started as a category for documents and creative files, and most of the tools still built for that use case treat a website as an afterthought at best. If what you're actually reviewing is a live site, not a PDF export or a static image, most of this category is the wrong tool with the right marketing. This is an honest, current-pricing comparison of the established proofing players, plus the lane most of them still miss.
Pricing snapshot (2026)
Pricing in this category has shifted noticeably over the past year, worth checking directly before you budget for a team:
| Tool | Entry price | Notes |
|---|---|---|
| Ziflow | Free tier, then $199/mo (Standard, billed annually) | Pro tier at $329/mo; free tier is genuinely usable but caps you at a single workflow stage |
| PageProof | From $249/mo | Carries a 10-user minimum, so a 3-person team still pays for 10 seats |
| Filestage | Free plan (2 users), then from $249/mo | Enterprise pricing on request |
| Markup.io | $79/mo flat, unlimited users, no free tier | Raised from $29 to $79/mo in a 2025 pricing change; retired its free plan the same year |
Two pricing details in that table are worth pulling out because they change the real cost more than the headline number does. PageProof's 10-user minimum means the "$249/mo" entry price is effectively a floor of ten seats whether you use them or not, a small studio pays the same as a ten-person team, so the per-actual-user cost is much higher than it looks for a three- or four-person shop. And Markup.io's history is worth flagging plainly for anyone comparing on cost: it jumped from $29 to $79/mo in a 2025 pricing change, a 172% increase applied to its existing user base, and it retired its free plan at the same time, so there's no longer a no-cost way to run a small one-off project through it. Its 30-day trial also requires a credit card up front. If you're evaluating it today, $79/mo flat (with 500GB of storage on the Pro workspace) is the current price, not a promotional one.
What each one is actually built for
Ziflow and PageProof are creative-ops proofing platforms built primarily around documents, images, video, and design files moving through structured approval rounds, markup, version comparison, sign-off states. They're strong where the deliverable is a file: a print ad, a video edit, a PDF brochure. Ziflow in particular supports 1,200-plus file types and unlimited reviewers even on its free tier (with 2GB of storage and a 60-day review history), which is generous for evaluating it. But website review is either a secondary feature or absent, and neither is built around the idea of annotating a live, interactive page the way a design file gets annotated.
Filestage occupies similar ground, document- and media-first review workflows with clean approval tracking, aimed at teams running structured creative review cycles across multiple file types rather than a specific website lane.
How they compare on the features that actually matter for approval
| Tool | Live website review | Guest access (no account) | Version comparison |
|---|---|---|---|
| Ziflow | Limited / secondary | Yes, via review links | Strong, built for creative-ops rounds |
| PageProof | Limited / secondary | Yes | Strong, AI-assisted change detection |
| Filestage | Not a core feature | Yes | Strong for document/media types |
| Markup.io | Yes, a real feature | Yes, the tool's core strength | Limited compared to the creative-ops tools above |
The pattern is consistent: the tools with the deepest version-comparison and structured-approval workflows treat live websites as a secondary use case, and the one tool that treats live websites as core (Markup.io) trades away the deeper file-version tooling the others built for documents and media.
Markup.io is the closest of the four to covering live websites directly: it supports creating markups from live pages alongside its broader file-type support (images, PDFs, video, and 30-plus formats), and no-account guest commenting is a real strength, a reviewer opens a link and clicks to comment with nothing to install. Where it's worth being precise: it's a general-purpose annotation tool with a website mode bolted on, not a tool purpose-built around a live site's actual DOM, selectors, or console state, and at $79/mo flat with no lower tier, it's priced for teams that need the full file-type breadth, not just the website lane. We go deeper on it specifically, and where it falls short for live-site work, in the Markup.io comparison.
The lane most of this category misses
Here's the gap: none of the four above capture a CSS selector, a viewport width, or a browser console error alongside a comment. That's fine if what you're reviewing is a static image or a PDF, there's no DOM to reference. It's a real limitation if what you're reviewing is a live, responsive website, because "this looks off" on a screenshot loses exactly the information, the actual element, the width it broke at, whether there's a JS error involved, that a developer or a coding agent needs to act on the fix without a round of clarifying questions.
This is the lane Shotline is built around specifically: proofing a live website, not a file export of one. A reviewer pins a comment directly to the rendered element on the actual page, and that pin carries the selector, viewport, and console context automatically, the structured version of what a document-proofing tool captures as a comment pinned to an X/Y coordinate on a flattened image. We're not neutral here since it's our product, so weigh the framing accordingly, but the distinction is real: a live site has state a static file doesn't, and reviewing it as if it were a flat image loses that state.
Where Shotline is honestly not the right pick
To match the standard this category's better comparisons set: if what you're actually proofing is a print asset, a video edit, or a PDF brochure, Shotline isn't the tool, it doesn't handle PDF or image canvases as of mid-2026, and Ziflow, PageProof, or Filestage are built specifically for that kind of file review with mature version-comparison and structured sign-off across those formats. Shotline's lane is the live, rendered website specifically, and if that's not what you're reviewing most weeks, one of the document-first tools above is the better fit.
What to actually check before committing
- What's the deliverable you're reviewing most often? A live website, a PDF, a video, an image, this alone should point you at one of the two lanes above before pricing even enters the conversation.
- Does a reviewer need an account? No-install, no-signup guest access is the single biggest driver of whether a client actually leaves feedback promptly instead of going quiet.
- Is pricing flat, per-seat, or per-project, and is there a seat minimum? Ziflow and PageProof's entry tiers start in the $199–249/mo range (and PageProof's 10-seat floor pushes the real per-user cost up for small teams); Markup.io is flat at $79/mo; check whether your actual usage fits comfortably under whichever model you're evaluating before committing to a year.
- Does the tool capture enough for whoever fixes the issue to act without more questions? For a document, that's usually a marked-up region. For a live website, that increasingly means a selector and console context, not just a circled area on a screenshot.
For the broader client-workflow picture beyond just proofing mechanics, approval states, sign-off tracking, and pricing that doesn't punish an agency for adding clients, see the best client feedback tools for agencies, which covers the category from the agency-buyer angle this post's pricing table feeds into. And for the honest comparison across every kind of website feedback tool, not just proofing specifically, the best website feedback tools is the fuller category map.
Where Shotline fits
If your review cycles are specifically about a live website, not a file export of one, Shotline's proxy-based review lets a client comment on the actual rendered page with just a name and email, no account, no extension, and every comment carries the selector and console context a developer or coding agent needs to act on it directly. Before you send a page out for review, the before/after image slider is a genuinely useful way to show a client the redesign side by side ahead of the proofing round itself. Shotline is free to try for 14 days, no card required, then from $19/mo (billed annually; $25 month-to-month) with unlimited client guests, start a free trial and send your next live-site review through it instead of a screenshot thread.
