I'd suggest changing the narrative. I've read through several of the comments already.
I agree I think your biggest con (pun not intended) to an employer is the risk/breach of public trust of your prior convictions. However, I think that your messaging can be reframed pretty easily.
I would separate your backstory from your pitch on your landing page. I know you're in a tough spot, but waving a flag of desperation is not your best move right now.
This is how I'd reorganize your pitch if I was in your situation:
[Current Summary, with portfolio link]
[What you offer, with links to portfolio projects and articles where you know a lot about a certain technology]
[Stub of your backstory with a link to another page (see below)]
[You can see my letters of recommendation from... (this is very important)]
[Due to my current circumstances, I'm offering my services below market rate of $25 per hour as I get on my feet.]
[Call to Action, to view portfolio or contact you.]
This is how I'd organize your backstory page:
[I was convicted for...]
[I learned and reformed in jail by x,y,z, give a glimps]
[Now that I'm out, I've done X, Y, and Z but my prior criminal history has made it very difficult to find employment. These people vouch for me, (letters of recommendation)]
[I'm currently at the end of my financial means as a family man with 5 kids... (I'd avoid mentioning unemployment directly, I'd say all government services available to me or something like that.)]
I'd say out of all of this, you should not position yourself as a victim or desperate. We, as humans, aren't inclined to that -- especially in hiring situations. u/jeffmould mentioned the Federal Bonding Program; I really think you should try to get that. I looked at their site and it seems promising. I'd remove the highly competitive rates, they mean nothing if you can't secure them. Your problem right now is potential employers likely don't trust you.
However, honestly. I'd make your reformed URL the about page and make your portfolio the pitch. I wouldn't worry about anonymity because: 1) it's already out there in the newspapers; 2) background checks will happen and you're wanting to get in front of this issue, not hide.
Ideally, you want to create a landing page that people can share.
Lastly, I know you can't move but if ever can or reach the need. I'd check out https://defyventures.org/. Also, most churches have "compassion", "care", or "mercy" ministries run by volunteers or the church deacons that help people in need. It might be worth a shot.