I Tested 8 Form Filler Extensions So You Don't Have To

Why I ran this test

Every form filler extension claims to be the best. Every review site ranks them differently. Most comparisons were written in 2023 and never updated. Half of them are affiliate spam.

So I did what no one else seems to want to do: I installed all 8 major form fillers, ran each one through the exact same 25 forms, and tracked every result in a spreadsheet. Three weeks. 200 form fills. A lot of clearing browser data between tests.

I am not going to pretend this is perfectly scientific. But it is honest. I noted every correct fill, every wrong fill, every skipped field, and every outright failure. The results surprised me in several places.

The 8 extensions I tested

1. Chrome built-in autofill (baseline, free)
2. Filliny (AI-powered, free tier + $12/mo Pro)
3. 1Password (password manager + form filler, $2.99/mo)
4. Bitwarden (password manager + form filler, free + $10/yr premium)
5. RoboForm (dedicated form filler, $2.49/mo)
6. Dashlane (password manager + autofill, $4.99/mo)
7. LastPass (password manager + form filler, $3/mo)
8. Autofill by AJR Software (generic Chrome extension, free)

I chose these because they are the tools that actually show up when you search for form filling solutions. Password managers get included because a lot of people rely on them for form filling, even though that is not their primary job.

How I scored them

Each tool was scored out of 10 across six criteria. I weighted them equally because what matters most depends on your use case.

• Accuracy on modern React/Vue forms (does it put the right data in the right fields?)
• Multi-step form handling (can it fill page 2, 3, 4 of a wizard?)
• Custom dropdown and date picker support (non-native HTML elements)
• Speed (how fast does it fill a full form?)
• Price (value for money)
• Privacy (where does your data go?)

The 25 test forms

I picked forms that represent the range of what people actually fill out online. The mix included:

• 5 job application portals (Workday, Greenhouse, Lever, iCIMS, BambooHR)
• 5 e-commerce checkouts (Shopify, WooCommerce, custom React, Magento, BigCommerce)
• 3 government portals (IRS form, state business registration, DMV appointment)
• 3 insurance quote forms (health, auto, renters)
• 3 SaaS account registrations (multi-field onboarding forms)
• 2 travel booking forms (flight + hotel)
• 2 login forms (standard username/password)
• 2 contact/feedback forms (simple 4-6 field forms)

This mix matters because different tools dominate different form types. A password manager will crush login forms but choke on a Workday application. A generic autofill extension might handle simple checkouts but fall apart on government portals.

Results: The full scoreboard

Here are the overall scores. I will break down the interesting categories below, but this is the summary if you just want the numbers.

Overall scores (out of 60)

1. Filliny: 47/60 (accuracy 9, multi-step 9, dropdowns 8, speed 7, price 7, privacy 7)
2. 1Password: 40/60 (accuracy 7, multi-step 5, dropdowns 5, speed 8, price 6, privacy 9)
3. Dashlane: 38/60 (accuracy 7, multi-step 5, dropdowns 5, speed 8, price 5, privacy 8)
4. RoboForm: 37/60 (accuracy 6, multi-step 6, dropdowns 6, speed 7, price 6, privacy 6)
5. Bitwarden: 36/60 (accuracy 6, multi-step 4, dropdowns 4, speed 7, price 8, privacy 7)
6. Chrome autofill: 33/60 (accuracy 5, multi-step 3, dropdowns 3, speed 9, price 10, privacy 3)
7. LastPass: 32/60 (accuracy 5, multi-step 4, dropdowns 4, speed 7, price 6, privacy 6)
8. Autofill (AJR): 28/60 (accuracy 4, multi-step 2, dropdowns 3, speed 6, price 9, privacy 4)

Now let me explain why these numbers look the way they do.

Where password managers actually win

I have to be honest here. On the 2 login forms in my test set, 1Password and Dashlane were flawless. Username, password, one click, done. That is what they were built for and they do it perfectly.

Filliny does not fill passwords at all. That is a deliberate design choice, not a missing feature. Password managers handle credential storage with encrypted vaults and zero-knowledge architecture. Trying to replicate that inside a form filler would be irresponsible. If you need a password manager, get a password manager. Filliny is not trying to replace that.

For simple e-commerce checkouts with standard address and payment fields, password managers also performed well. 1Password filled 4 of the 5 checkout forms correctly. Dashlane got 4 as well. The one they both missed was a custom React checkout with non-standard field names.

If your form-filling life consists entirely of logins and basic checkouts, a password manager might be all you need. No shame in that. But most people fill out more than logins.

Where everything except AI falls apart

The real separation happened on the 5 job application portals and the 3 government forms. These are the forms that make people want to throw their laptops.

Job applications (Workday, Greenhouse, Lever, iCIMS, BambooHR)

• Chrome autofill: filled page 1 of 3 on Greenhouse. Failed completely on Workday and iCIMS. Could not interact with custom dropdowns on any of them.
• 1Password: handled basic name/email/phone fields on 3 of 5. Skipped everything else. No work history, no education, no custom questions.
• RoboForm: got further than most. Filled about 60% of fields on Greenhouse and Lever. Struggled with conditional fields and multi-step navigation.
• Filliny: completed all 5 applications across all steps. Handled custom dropdowns on Workday. Filled conditional fields on Greenhouse. Got the date pickers on iCIMS. Missed a custom "How did you hear about us?" dropdown on one BambooHR form (picked wrong option).

The gap here was enormous. On a Workday application with 47 fields across 4 pages, Chrome autofill filled 3 fields. Filliny filled 44. That is the difference between 12 minutes of typing and 15 seconds of checking.

Government forms

Government portals are built with legacy tech. Field names like txtCtrl_287. Custom date inputs from 2008. Dropdowns that are actually hidden divs with JavaScript click handlers.

• Chrome autofill: correctly filled 0 of 3 government forms. Actually put my zip code in a tax ID field on one of them.
• Password managers: 1Password got partial credit on 1 form. The rest were blank or wrong.
• Filliny: filled 2 of 3 correctly. The IRS form and the business registration worked. The DMV appointment form had a date picker that Filliny could not interact with. I had to pick the date manually.

Two out of three is not perfect. But it is infinitely better than zero out of three.

The speed surprise

Chrome autofill is instant. It fills fields the moment the page loads. That gave it a 9 out of 10 on speed. Password managers are close behind at 8 because you need to click a popup or keyboard shortcut first.

Filliny is the slowest of the top 5 at about 2-4 seconds per form. It needs to scan the page, send the form structure to the AI, and then fill each field. On a simple 5-field form that delay is noticeable. On a 47-field Workday application it is irrelevant because the alternative is 12 minutes of manual typing.

Speed only matters if the tool actually fills the form correctly. Being fast at filling 3 out of 47 fields is not useful.

Privacy comparison

This is where people get nervous, and rightfully so. Your form data includes names, addresses, phone numbers, and employment history. Where does it go?

• Chrome autofill: data stays in your Google account. If you are already logged into Chrome, Google has this data. Privacy score: 3/10 (it works but Google already has everything).
• 1Password: zero-knowledge encryption. They cannot read your data even if they wanted to. Best privacy model of the bunch. Score: 9/10.
• Filliny: sends form structure to AI for processing. Your profile data is stored encrypted. Form content is processed and not retained after filling. Score: 7/10.
• Autofill (AJR): unclear privacy policy. Data stored locally but permissions are broad. Score: 4/10.

1Password has the best privacy model, full stop. That is a genuine advantage. If privacy is your top concern above everything else, 1Password wins this category and it is not close.

The honest Filliny weaknesses

I would not trust a review that presents any tool as perfect. Here is where Filliny fell short in my testing:

• No password filling. Deliberate, but it means you still need a separate tool for logins.
• 2-4 second delay. The AI processing takes time. On simple forms you notice the wait. On complex forms you do not care.
• Ambiguous dropdowns. Occasionally picks the wrong option when dropdown labels are vague. Happened 4 times across 200 fills in my test.
• Some legacy date pickers. The DMV appointment form had a particularly ancient calendar widget that Filliny could not click into.
• Requires internet connection. The AI runs server-side. No internet, no form filling. Chrome autofill works offline.

A 2% error rate on dropdown selections is real. I always review filled forms before submitting. You should too, regardless of which tool you use.

Which tool for which person

After 200 form fills, here is my honest recommendation by use case:

• Job seekers filling out applications daily: Filliny. Nothing else comes close on Workday, Greenhouse, and Lever.
• People who mainly need login management: 1Password or Bitwarden. Built for that job.
• Freelancers filling business forms constantly: Filliny. Profile system handles multiple contexts well.
• Casual users who fill maybe 3 forms a week: Chrome autofill is free and good enough for simple forms.
• Privacy absolutists who want zero cloud processing: 1Password with local vault. Accept the trade-off on complex forms.

The best answer for most people? Use a password manager for logins AND an AI form filler for everything else. They solve different problems and work well side by side.

Price breakdown

Cost matters. Here is what you actually pay per month for each option:

• Chrome autofill: $0 (built into Chrome)
• Autofill (AJR): $0 (free Chrome extension)
• Bitwarden: $0-$0.83/mo (free tier is solid, premium is $10/year)
• Filliny: $0 for 5 fills, then $12/mo or $8.25/mo annual
• RoboForm: $2.49/mo
• 1Password: $2.99/mo
• LastPass: $3/mo
• Dashlane: $4.99/mo

Filliny is not the cheapest. At $12/month it costs more than most password managers. But the annual plan drops it to $8.25/month, which is $0.27 per day. If you fill 5+ forms per week on complex sites, the time savings pay for the cost many times over. If you fill fewer forms, the free tier with 5 fills might be enough.

What I am using 3 weeks later

I kept two tools installed after the test ended.

1Password handles my logins and credit card autofill. It is excellent at that and I have used it for years. I am not switching.

Filliny handles everything else. Job applications, government forms, SaaS signups, insurance quotes, vendor registrations, contact forms. Anything with more than a username and password field.

The two tools do not overlap and do not conflict. They solve different problems. That surprised me because I expected to pick one winner. The real answer turned out to be: use both.

If you want to see which tool handles your specific forms, install Filliny and test it on whatever form has been annoying you the most. Five free fills. No credit card. You will know within two forms whether it earns a permanent spot next to your password manager.

I started this test expecting to find one tool that does everything. Instead I found that form filling has two separate problems: credential management and everything else. The best setup is two tools that each do their job well.